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High‐Efficiency Hybrid Solar Cells Based on Polymer/PbS x Se 1‐x Nanocrystals Benefiting from Vertical Phase Segregation
Author(s) -
Liu Zeke,
Sun Yaxiang,
Yuan Jianyu,
Wei Huaixin,
Huang Xiaodong,
Han Lu,
Wang Weiwei,
Wang Haiqiao,
Ma Wanli
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201302340
Subject(s) - nanocrystal , materials science , polymer , dissociation (chemistry) , acceptor , alloy , photoluminescence , nanotechnology , optoelectronics , chemistry , physics , condensed matter physics , composite material
Solution‐processed hybrid solar cells employing a low band‐gap polymer and PbS x Se 1‐x alloy nanocrystals, achieving a record high PCE of 5.50% and an optimal FF of 67% are presented. The remarkable device efficiency can be attributed to the high‐performance active materials, the optimal polymer/NCs ratio and, more importantly, the vertical donor/(donor:acceptor)/acceptor structure which benefits charge dissociation and transport.