Graphene materials and their use in dyesensitized solar cells. At the same time, a consistent improvement in pce is. A twostep thermal annealing and hno3 doping treatment for. Graphene is transparent, so that electrodes made from it can be applied to the transparent organic solar cells without blocking any of the incoming light. The graphene based transparent and conductive films were demonstrated to be costeffective electrodes working in organic inorganic hybrid schottky solar cells. The devices show excellent efficiency with remarkable stability owing to. Pss electrode with optimized solvent and thermal posttreatment for itofree organic solar. Paolo paletti 1, ravinder pawar 1, giacomo ulisse 2. An annealingfree process is considered as a technological advancement for the development of flexible or wearable organic electronic devices, which can prevent the distortion of substrates and damage to the active components of the device and simplify the overall fabrication process to increase the industrial applications. Interestingly, with the addition of a doped polymer layer, the cell exhibits. The polymeric acid exhibits high doping effectiveness which is durable for more than one year.
P and n doped graphene electrodes have been used and the solar cells achieved a maximum efficiency of 1. Jun 15, 2017 imagine a future in which solar cells are all around uson windows and walls, cell phones, laptops, and more. Metalelectrodefree windowlike organic solar cells with p. Applications of carbon nanotubes and graphene for thirdgeneration. Chandler, mit news the structure of graphene, a flexible material made of carbon atoms arranged in a layer just one atom. Published 23 november 2010 iop publishing ltd nanotechnology, volume 21, number 50. Pss, which is sandwiched between silicon wafer and graphene electrode. Hybrid transparent monolayer graphene metal grid is proposed as top electrode of semitransparent organic solar cells. The first problem is depositing the graphene electrodes onto the solar cell.
Organic semiconductor solar cells are a promising route to scalable, economically viable, energy conversion technologies due to the potential for developme. Organic solar cells oscs have attracted great attention in recent years. Interface engineering is a critical factor in achieving high photovoltaic performances for largearea, printable, flexible and low cost organic solar cells oscs. Semitransparent organic solar cells with hybrid monolayer. The devices also show good air stability, indicating that multilayer graphene is a promising environmental barrier. Borondoped diamond bdd is suggested as the transparent electrode.
This paper presents a facile and economic development of dye. Although znoa ntype oxide semiconductorcan lead to ntype doping of the graphene film, direct coating of zno on graphene is found to have a destructive effect and therefore yields a high sheet. Free flexible organic solar cells with graphene top. Promising hybrid graphenesilver nanowire composite. Finally, the 4layer aciddoped graphene solar cell exhibited the best. Pss layer has been replaced by graphene derivatives and are generally used as holetransport layers in organic solar cells. Transparent, flexible solar cells combine organic materials.
Silver nanowires in conjunction with sputtercoated al doped zno azo thin films were used as a composite transparent top electrode for hybrid radialjunction zno. Apr 25, 2019 fabrication of flexible transparent electrodes ftes is one of the core technologies in the field of flexible electronics. Nitrogendoped grapheneplatinum counter electrodes for dye. Pss, buckminster fullerenes c 60, and copper into the electrodes, where one electrode is doped with gold particles, which are in the form of gold iii chloride. Pss as anodecathode transparent conductive electrodes tces, electron transport layer, photoactive layer, and hole transport layer, respectively, fabricated based on simple solution processing. Metal electrode free windowlike organic solar cells with p doped carbon nanotube thinfilm electrodes skip to main content thank you for visiting. Ju mj1, kim jc, choi hj, choi it, kim sg, lim k, ko j, lee jj, jeon iy, baek jb, kim hk.
Superflexible bistrifluoromethanesulfonylamide doped. Layer stacked graphene anodes for highperformance organic solar cells. The hybrid solar cell devices consist of solutionprocessed poly 3,4ethlenedioxythiophene. The solar cells based on graphene electrodes, especially those doped with hno 3, have comparable performance. Edgeselenated graphene nanoplatelets as durable metal. An analysis of how to use graphene as an electrode for such solar cells was published on dec. Herein, we developed a solutionprocessable ndoped graphene cathode. Can graphene outperform indium tin oxide as transparent. Green and economic transparent conductive graphene electrode.
In addition, it is flexible, like the organic solar cells themselves, so it could be part of installations that require the panel to follow the contours of a structure, such as a patterned roof. Transparent conductive electrode tce is a main building block in organic solar cell in determining the device performance. Graphene quantum dots enhance the powerconversion efficiency of organic solar cells to 3. Imagine a future in which solar cells are all around uson windows and walls, cell phones, laptops, and more. It has been reported that graphene can play diverse, but positive roles such as an electrode, an active layer, an interfacial layer and an electron acceptor in photovoltaic cells. Organic solar cells with graphene electrodes and vapor printed poly3. Properties of the bdd based solar cells were studied. Development of annealingfree, solutionprocessable inverted. First use of graphene transparent conductive electrodes doped with graphene quantum dotsmixed silver nanowires. Promising hybrid graphene silver nanowire composite electrode for flexible organic lightemitting diodes. Compared to the pristine reduced graphene oxide rgo, sirgo exhibits significant enhancement in electrocatalytic and electrochemical properties. Highly flexible, highperformance perovskite solar cells with.
Borondoped graphite for high work function carbon electrode. Another variety of graphene bi electrode solar cells integrating pedot. Ndoping of graphene was achieved by annealing mixtures of graphene oxide with urea. Its high transparency, conductivity, flexibility, and abundance make it an excellent material to be applied in the field of organic. The fabrication of moo 3interlayer doped graphene multilayer mid gml is enabled by successive applications of a modified wet. Pdf graphene as a material for solar cells applications. Graphenebased functional materials for organic solar cells. Among multiple choices of ftes, poly3,4ethylenedioxythiophene. New market trend for organic solar cell osc require lightweight, cost effective, environmentally friendly and flexible. We report semitransparent and flexible organic solar cells foscs with high aperture, composed of doped graphene layers, zno, p3ht. Pdf doped graphene electrodes for organic solar cells. Doped and textured graphene as electrode for organic solar. Kannan, jinxing zhao, sung geun jo, yong soo kang and dongwon kim, nitrogen and sulfur co doped graphene counter electrodes. Leung2 1department of electrical and electronic engineering, the university of hong kong, pokfulam road, hong kong, china 2department of applied physics, the hong kong polytechnic university, hung hom, kowloon.
Kauppinen3, shigeo maruyama2,4, and yutaka matsuo1, 1. Ndoped graphene nanoplatelets as superior metalfree. Ultrathin organic solar cells with graphene doped by. Gr and a natural sensitizer extracted from calotropis gigantea leaves. The devices also show good air stability, indicating that multilayer graphene is a promising environmental barrier that can protect the organic solar cells from air.
Synthesis of silicondoped reduced graphene oxide and its. Thicknessdependent efficiency of directly grown graphene based. Jun 25, 20 n doped graphene nanoplatelets as superior metalfree counter electrodes for organic dyesensitized solar cells. Graphene based functional materials can be used as transparent window. Pss layer and a donoracceptor blend layer commonly composed of p3ht or fullerenes or both. Morse,2 taehee han,3 yuta sato,4 anton anisimov,5 kazu suenaga,1,4 esko i. Research on solar cells containing in its structure graphene however, are still at laboratory scale. Graphene and its derivatives for solar cells application. Carbon nanotubes versus graphene as flexible transparent. Organic solar cells using cvdgrown graphene electrodes view the table of contents for this issue, or go to the journal homepage for more home search collections journals about contact us my iopscience. Charge transfer doping and band alignment of graphene electrodes for efficient. Possibility of the application of bdd in organic solar cells was shown. A twostep thermal annealing and hno3 doping treatment for graphene electrode and its application in smallmolecule organic solar cells. A new flexible, transparent solar cell developed at mit brings that future one step closer.
Large area graphene films were produced by chemical vapor deposition on copper foils and transferred onto glass as transparent electrodes. We demonstrate that solutionprocessed graphene thin films can serve as transparent conductive anodes for organic photovoltaic cells. Transparent carbon electrodes, carbon nanotubes, and graphene were used as the bottom electrode in flexible inverted perovskite solar cells. Request pdf flexible organic solar cells composed of p3ht.
Graphene and carbonnanotubebased transparent electrodes. Graphene transparent conductive electrodes doped with. Organic solar cells with graphene electrodes and vapor printed. Graphene is of great interest for future applications in organic photovoltaics opvs due to its high threedimensional aspect ratio, large specific surface area, remarkable optical transmittance, extraordinary thermal response, excellent electronhole transport properties, superior mechanical stiffness and flexibility. Nitrogen doped graphene for dyesensitized solar cells and the role. Environmental and economic assessment of itofree electrodes for organic solar cells christopher j. Figure 5a presents a schematic view of semitransparent organic solar cells with allgraphene electrodes comprising twolayer stacked graphene. We demonstrate a flexible and transparent electrode consisting of a graphene multilayer that is interlayer doped by layers of moo 3, a material that has attractive features as a graphene dopant but has not been used as such due to difficulties in fabrication. Graphenebased transparent electrodes for hybrid solar cells.
Article extremely stable graphene electrodes doped with macromolecular acid sungjoo kwon1, taehee han2,3, taeg yeoung ko4, nannan li 5, youngsoo kim6, dong jin kim6,7, sanghoon bae3, yang yang3, byung hee hong 7, kwang s. While organic solar cells have been promising an inexpensive way to exploit solar. Department of chemistry, school of science, the university of tokyo, 731 hongo. Together with the merit of both high work function and conductivity, the power conversion efficiency of holeconductorfree mesoscopic perovskite solar cells is increased from 12. Organic solar cells oscs belong to the class of photovoltaic devices known as excitonic solar. Here, cuxo is proposed to modify monolayer graphene in order to increase the.
Jul 28, 2017 in addition, a graphene electrode can be just 1 nanometer thick a fraction as thick as an ito electrode and a far better match for the thin organic solar cell itself. Jan 24, 2018 urea doped zno films as the electron transport layer for high efficiency inverted polymer solar cells. Applications of cnts and graphene in organic solar cells. Choy,1,a di zhang,1 fengxian xie,1 jianzhuo xin,2 and c. A simple yet effective method for substantially boosting the conductivity of these conducting. The resultant ngnp was deposited on fluorine doped sno2 ftoglass substrates by using electrospray espray coating, and their. Pss has shown its promising application in rolltoroll manufacturing. Graphene for electrodes in organic solar cells could reduce costs.
Organic photovoltaics opvs have gained much attention as. The widely used electrodes consist of fluorine doped tin oxide fto and platinum. Herein, we developed a solutionprocessable n doped graphene cathode interfacial material cim pdinog for oscs by adding graphene to the classi. Chemical doping and enhanced solar energy conversion of. Aside from the two electrodes, traditional organic solar cells contain an active pedot. The values of efficiency achieved can be compared with those obtained using graphene electrodes in organic bhj solar cells. Hyesung park 1, jill a rowehl 2, ki kang kim 1, vladimir bulovic 1 and jing kong 1. Graphene and carbonnanotubebased transparent electrodes for semitransparent solar cells. N doped graphene nanoplatelets as superior metalfree counter electrodes for organic dyesensitized solar cells. Except the part of charge extracting and transport to the electrodes, graphene has another unique role of device protection against environmental degradation via its packed 2d network structure and. Using graphene based solar cells for solar applications. In addition, the tfsa doped gr tcebased flexible perovskite solar cells show excellent bending stabilities, maintaining pces of. Jan 06, 2011 graphene is transparent, so that electrodes made from it can be applied to the transparent organic solar cells without blocking any of the incoming light. Optical and electrical properties of bdd were studied.
Organic solar cells using cvdgrown graphene electrodes hobeom kim, sanghoon bae, taehee han et al. The prepared materials were characterized using various techniques, such as raman. Replacing indiumtinoxide as the material for electrodes in organic solar cells provides a number of benefits. The application of highly doped singlelayer graphene as the top electrodes of semitransparent organic solar cells article in acs nano 61. Flexible organic solar cells oscs composed of blended films of poly3hexylthiophene p3ht and 6,6phenylc61butyric acid methyl ester pcbm were fabricated and investigated with chemically doped multilayer graphene films as transparent and conducting electrodes on. The application of highly doped singlelayer graphene as. Heavily doped poly3,4ethylenedioxythiophene thin films with high carrier mobility deposited using. Dopant gives graphene solar cells highest efficiency yet. Graphene electrodes for organic solar cells mit news. Carbon nanotube transparent electrodes doped with the polymeric acid were used in organic solar cells. Graphene quantum dots make the doped graphene more suitable for anode electrodes of organic solar cells. Electrodes are vital components of energy conversion devices such as dye sensitized solar cells dsscs. Graphene as a material for solar cells applications in. Polymeric acid doped transparent carbon nanotube electrodes in organic solar cells with the longest doping durability il jeon,1 clement delacou,1 hiroshi okada,1 graham e.
A composite film was obtained by layer deposition of n doped graphene and poly3,4ethylenedioxythiophene pedot and was used as ptfree counter electrode for dyesensitized solar cells. Transparent and flexible electrode composed of a graphene. However, the graphene electrode suffers from work function mismatch with common hole injection layer and intrinsic hydrophobic property. Two key problems have slowed the wholesale adoption of graphene electrodes. Owing to its outstanding electrical, optical, and mechanical. Semitransparent organic solar cells with hybrid monolayer graphenemetal grid as top electrodes peng lin,1 wallace c. Studies have shown that doped graphene can change one absorbed photon of a few. The solar cells based on graphene electrodes, especially those doped with hno3, have comparable performance to the reference devices using commercial indium tin oxide ito. Fabricated bdd electrodes were applied in polymerfullerene solar cells. Our work suggests that graphene based transparent electrode is a promising candidate to replace ito.
Semitransparent flexible organic solar cells employing. Graphene has proved to be useful not only as substitute for ito electrodes, but also as. Graphene is an ideal substitute for indium tin oxide electrode in organic photovoltaic opv devices, due to its outstanding electrical, optical, chemical and mechanical properties. Kietzke t 2007 recent advances in organic solar cells adv. Nitrogendoped graphene ngr was utilized in dyesensitized solar cells for energy harvesting. Pcbm using chemically doped graphene electrodes flexible organic solar cells oscs composed of blended films of poly3hexylthiophene. Therefore, diamond could be considered to be a prospective material for electrodes as soon as the issue of transparency vs. Organic solar cells with solutionprocessed graphene. Doped graphene electrodes for organic solar cells hyesung park, jill a rowehl, ki kang kim et al. Can graphene outperform indium tin oxide as transparent electrode in organic solar cells.
Efficient and bright organic lightemitting diodes on. Their photovoltaic performance and mechanical resilience were compared and analyzed using various techniques. Jul 17, 2017 please use one of the following formats to cite this article in your essay, paper or report. Emmotta,n, antonio urbinaa,b, jenny nelsona a department of physics and grantham institute for climate change, imperial college london, london sw7 2az, united kingdom b department of electronics, technical university of cartagena, plaza hospital 1, 30202 cartagena, spain. Organic solar cells using cvdgrown graphene electrodes. Metal electrode free windowlike organic solar cells with p doped carbon nanotube thinfilm electrodes il jeon1, clement delacou2, antti kaskela3, esko i. R sh of an hno 3 doped graphene gradually increases under ambient conditions. Doped and textured graphene as electrode for organic solar cells.
The device combines lowcost organic carboncontaining materials with electrodes of graphene, a flexible, transparent material made from inexpensive, abundant carbon sources. Solutionprocessable ndoped graphenecontaining cathode. Files available from the acs website may be downloaded for personal use only. Graphene quantum dots enhance the powerconversion efficiency of organic solar cells. The graphene electrodes were deposited on quartz substrates by spin coating of an aqueous dispersion of functionalized graphene, followed by a reduction process to reduce the sheet resistance. Metalelectrodefree windowlike organic solar cells with p doped carbon nanotube thinfilm electrodes il jeon1, clement delacou2, antti kaskela3, esko i. Nitrogendoped grapheneplatinum counter electrodes for. Graphene has been used in electrodes and anode interfacial materials, and. Graphene electrodes for organic solar cells 6 january 2011, by david l. Ndoped graphene nanoplatelets as superior metalfree counter. By acid doping the cnt films can have a sheet resistance of 40. Graphene, a material composed of oneatomthick planar sheets of sp 2 bonded carbon atoms with a twodimensional honeycomb structure, has been proposed for many applications due to its remarkable electronic, optical, thermal, and mechanical properties. Aug 16, 2016 metalelectrodefree windowlike organic solar cells with p doped carbon nanotube thinfilm electrodes skip to main content thank you for visiting.
Development of annealingfree, solutionprocessable inverted organic solar cells with n doped graphene electrodes using zinc oxide nanoparticles. Tai g, lau sp and yan f 2012 the application of highly doped singlelayer graphene as the top electrodes of semitransparent organic solar cells acs nano 6 8108 pmid. Nitrogen doped graphene ngr was utilized in dyesensitized solar cells for energy harvesting. Metalelectrodefree windowlike organic solar cells with. The application of graphene as electrodes in electrical and optical devices gunho jo, minhyeok choe, sangchul lee et al. May 21, 2012 dopant gives graphene solar cells highest efficiency yet. Article views are the countercompliant sum of full text article downloads since november 2008 both pdf and html across all institutions and individuals.
Graphene nanoplatelets doped with n at its edges as metal. We were interested in identifying a substrate that is available from natural resources and exhibit performance comparable to that of pt coated fto pt. The doping of the graphene electrode alters the wetting in the pedot. Doped graphene electrodes for organic solar cells this article has been downloaded from iopscience. Organic solar cells using cvdgrown graphene electrodes hobeom kim1, sanghoon bae2, taehee han1, kyunggeun lim1, jonghyun ahn2 and taewoo lee1 1 department of materials science and engineering, pohang university of science and technology, pohang 790784, korea 2 school of electrical and electronic engineering, yonsei university, seoul 120. Aldoped znoagnanowire composite electrodes for flexible. Urea doped zno films as the electron transport layer for high efficiency inverted polymer solar cells.