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Microcavity‐Enhanced Light‐Trapping for Highly Efficient Organic Parallel Tandem Solar Cells
Author(s) -
Zuo Lijian,
Chueh ChuChen,
Xu YunXiang,
Chen KungShih,
Zang Yue,
Li ChangZhi,
Chen Hongzheng,
Jen Alex K.Y.
Publication year - 2014
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.201402782
Subject(s) - tandem , materials science , optoelectronics , photovoltaic system , organic solar cell , solar cell , energy conversion efficiency , anode , electrode , polymer , composite material , ecology , chemistry , biology
A high‐performance parallel tandem solar cell employing ultra‐thin Ag as the intermediate anode is demonstrated, which comprises a semitransparent front sub‐cell and a microcavity assisted back sub‐cell. In addition to the extended optical field as a result of the tandem architecture, the prominent microcavity resonance formed in the back sub‐cell enables such a parallel tandem configuration to possess high light utilization efficiency (the peak EQE value is over 80%) and a high photovoltaic performance of 9.2%. This study establishes an effective architecture that can be generally applicable to all organic materials for improving their performance.