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Benzophosphole Oxide and Sulfide for Thermally Stable Cathode Buffer Layers in Organic Thin‐Film Photovoltaic Devices
Author(s) -
Tsuji Hayato,
Sato Kosuke,
Sato Yoshiharu,
Nakamura Eiichi
Publication year - 2010
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201000093
Subject(s) - materials science , buffer (optical fiber) , crystallization , annealing (glass) , photovoltaic system , optoelectronics , cathode , thin film , oxide , sulfide , layer (electronics) , chemical engineering , nanotechnology , composite material , chemistry , electrical engineering , metallurgy , engineering
Don′t touch! Benzophosphole derivatives, which have a high glass transition temperature and resistance to crystallization, are shown to be useful as cathode buffer materials for OPV devices. The benzophosphole‐based devices showed an improvement in power conversion efficiency by annealing, which can be ascribed to the decrease in the contact resistance between the buffer layer and the adjoining layers.