Graphene Oxide Interlayers for Robust, High-Efficiency Organic Photovoltaics

Murray, Ian P.; Lou, Sylvia J.; Cote, Laura J.; Loser, Stephen; Kadleck, Cameron J.; Xu, Tao; Szarko, Jodi M.; Rolczynski, Brian S.; Johns, James E.; Huang, Jiaxing; Yu, Luping; Chen, Lin X.; Marks, Tobin J.; Hersam, Mark C.

doi:10.1021/jz201493d

Cited by 159 publications

(136 citation statements)

References 43 publications

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“…The observed enhancement in the J sc value could be attributed to the improved electron transport resulting from the increase in more number of nanoparticles. This indicated a higher mobility of charges resulting from both Cu 2 O and TiO 2 nanoparticles induced into the GO layer [32]. The highest PCE value obtained from type-c nanocomposite was also attributed to a stronger coupling effect due to the close distance between the Cu 2 O-TiO 2 nanoparticles and the active layer of GO.…”

Section: Current-voltage (I-v) Performances Of Nanocompositesmentioning

confidence: 88%

Synthesis of Cu2O nanoparticles and current–voltage measurements (I-V) of its nanocomposites

Debbarma

Sutradhar

Saha

2016

Nanotechnol. Environ. Eng.

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Here we have reported the synthesis of Cu 2 O nanoparticles from copper acetate under microwave irradiation at a low power of 180 W, followed by calcinations at higher temperature of 500°C, in the presence of three reducing agents viz oxalic acid, ascorbic acid and potassium hydroxide. Oxalic acid gave spherical-shaped aggregates of Cu 2 O nanoparticles which varied from 2 to 5 lm having the particle size less than 100 nm. Ascorbic acid also produced spherical-shaped nanoparticles, below 100 nm. Potassium hydroxide gave cotton ball-like structures of Cu 2 O nanoparticles, having particle size less than 50 nm. A current-voltage (I-V) performance of Cu 2 O nanoparticles, grapheme oxide (GO) and titanium dioxide (TiO 2 ) nanoparticles-based bulk heterojunction cell was further investigated. Thin films of nanocomposites viz GO/ Cu 2 O and GO/Cu 2 O/TiO 2 taken in 1:1 and 1:1:1 ratios, respectively, were prepared. The highest efficiency of 1.41 % was observed in case of thin film of GO/Cu 2 O/TiO 2 resulting from J sc value of 3.83 mAcm -2 , V oc value of 0.594 V and fill factor (FF) of 0.62.

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Section: Current-voltage (I-v) Performances Of Nanocompositesmentioning

confidence: 88%

Synthesis of Cu2O nanoparticles and current–voltage measurements (I-V) of its nanocomposites

Debbarma

Sutradhar

Saha

2016

Nanotechnol. Environ. Eng.

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“…On the other hand, an extremely high PCE of 7.5% has recently been reported for BHJ solar cells by Murray et al [21]. The cells were fabricated using a p-type semiconductor, poly [[4,8- , an n-type semiconductor, [6,6]-phenyl-C71-butyric-acid-methyl-ester (PC 71 BM), and a lithium fluoride (LiF) inserted Al cathode on an indium tin oxide (ITO) coated glass substrate.…”

Section: Introductionmentioning

confidence: 90%

Bulk-heterojunction Solar Cells Based on Ternary Blend Active Layers of PTB7, PC<sub>61</sub>BM, and PC<sub>71</sub>BM

Qiu

Kiriishi

Hashiba

et al. 2015

J. Photopol. Sci. Technol.

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Bulk-heterojunction solar cells were fabricated using ternary blend dichlorobenzene solutions of poly [4,8-bis[(2-ethylhexyl)]-phenyl-C61-butyric acid methyl ester (PC 61 BM):[6,6]-phenyl C71 butyric acid methyl ester (PC 71 BM) with different weight ratios between PC 61 BM and PC 71 BM. In all the solar cells, the overall weight ratio of polymer to fullerene was maintained at 1:1.5, while the composition of the fullerene component (PC 61 BM:PC 71 BM) was varied. The ultraviolet-visible absorption spectra of these ternary blend films showed that the photon absorptions at wavelengths between 300 and 800 nm continuously decreased with the increase of the PC 61 BM weight fraction in the PC 61 BM and PC 71 BM total weight. The measurement results of the solar cell performance showed that the open-circuit voltage notably increased for PC 61 BM weight fractions between 10% and 90%, while it decreased at 100%. The short-circuit current showed the most significant increase in the PC 61 BM weight fraction range between 50% and 60%. A power conversion efficiency of 3.4% was achieved when the PC 61 BM weight fraction was between 50% and 60%. These results may suggest that the transport of the photoexcited electrons between the cathode and the PC 61 BM/PC 71 BM nanodomains was enhanced.

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“…Hersam and coworkers reported a single layer of electronically tuned GO as effective replacement for PEDOT:PSS as anode IFL [92]. The GO film was deposited with a controlled density via Langmuir-Blodgett assemble, followed by low-level ozone exposure.…”

Section: Graphene Oxide and Its Derivativesmentioning

confidence: 99%

Interfacial Layer Engineering for Performance Enhancement in Polymer Solar Cells

et al. 2015

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Improving power conversion efficiency and device performance stability is the most critical challenge in polymer solar cells for fulfilling their applications in industry at large scale. Various methodologies have been developed for realizing this goal, among them interfacial layer engineering has shown great success, which can optimize the electrical contacts between active layers and electrodes and lead to enhanced charge transport and collection. Interfacial layers also show profound impacts on light absorption and optical distribution of solar irradiation in the active layer and film morphology of the subsequently deposited active layer due to the accompanied surface energy change. Interfacial layer engineering enables the use of high work function metal electrodes without sacrificing device performance, which in combination with the favored kinetic barriers against water and oxygen penetration leads to polymer solar cells with enhanced performance stability. This review provides an overview of the recent progress of different types of interfacial layer materials, including polymers, small molecules, graphene oxides, fullerene derivatives, and metal oxides. Device performance enhancement of the resulting solar cells will be elucidated and the function and operation mechanism of the interfacial layers will be discussed. OPEN ACCESSPolymers 2015, 7 334

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Graphene Oxide Interlayers for Robust, High-Efficiency Organic Photovoltaics

Cited by 159 publications

References 43 publications

Synthesis of Cu2O nanoparticles and current–voltage measurements (I-V) of its nanocomposites

Synthesis of Cu2O nanoparticles and current–voltage measurements (I-V) of its nanocomposites

Bulk-heterojunction Solar Cells Based on Ternary Blend Active Layers of PTB7, PC<sub>61</sub>BM, and PC<sub>71</sub>BM

Interfacial Layer Engineering for Performance Enhancement in Polymer Solar Cells

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