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Graphene Oxide Interlayers for Robust, High-Efficiency Organic Photovoltaics

Organic photovoltaic (OPV) materials have recently garnered significant attention as enablers of high power conversion efficiency (PCE), low-cost, mechanically flexible solar cells. Nevertheless, further understanding-based materials developments will be required to achieve full commercial viability...

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Published in:The journal of physical chemistry letters 2011-12, Vol.2 (24), p.3006-3012
Main Authors: 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
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cited_by cdi_FETCH-LOGICAL-a201t-6953d682e7eb51cac2103cf75d6b92f3e6a3f6a25ea93a8b3a12951e33e134023
cites cdi_FETCH-LOGICAL-a201t-6953d682e7eb51cac2103cf75d6b92f3e6a3f6a25ea93a8b3a12951e33e134023
container_end_page 3012
container_issue 24
container_start_page 3006
container_title The journal of physical chemistry letters
container_volume 2
creator 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
description Organic photovoltaic (OPV) materials have recently garnered significant attention as enablers of high power conversion efficiency (PCE), low-cost, mechanically flexible solar cells. Nevertheless, further understanding-based materials developments will be required to achieve full commercial viability. In particular, the performance and durability of many current generation OPVs are limited by poorly understood interfacial phenomena. Careful analysis of typical OPV architectures reveals that the standard electron-blocking layer, poly-3,4-ethylenedioxy-thiophene:poly(styrene sulfonate) (PEDOT:PSS), is likely a major factor limiting the device durability and possibly performance. Here we report that a single layer of electronically tuned graphene oxide is an effective replacement for PEDOT:PSS and that it significantly enhances device durability while concurrently templating a performance-optimal active layer π-stacked face-on microstructure. Such OPVs based on graphene oxide exhibit PCEs as high as 7.5% while providing a 5× enhancement in thermal aging lifetime and a 20× enhancement in humid ambient lifetime versus analogous PEDOT:PSS-based devices.
doi_str_mv 10.1021/jz201493d
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subjects AGING
EFFICIENCY
Energy Conversion and Storage
LIFETIME
MICROSTRUCTURE
OXIDES
RELIABILITY
SOLAR CELLS
SOLAR ENERGY
VIABILITY
title Graphene Oxide Interlayers for Robust, High-Efficiency Organic Photovoltaics
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