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High‐Efficiency Perovskite Solar Cells Based on the Black Polymorph of HC(NH 2 ) 2 PbI 3
Author(s) -
Lee JinWook,
Seol DongJin,
Cho AnNa,
Park NamGyu
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.201401137
Subject(s) - materials science , perovskite (structure) , energy conversion efficiency , iodide , solar cell , perovskite solar cell , hysteresis , phase transition , optoelectronics , crystallography , inorganic chemistry , condensed matter physics , chemistry , physics
Perovskite solar cells with power conversion efficiencies exceeding 16% at AM 1.5G one sun illumination are developed using the black polymorph of formamidnium lead iodide, HC(NH 2 ) 2 PbI 3 . Compared with CH 3 NH 3 PbI 3 , HC(NH 2 ) 2 PbI 3 extends its absoprtion to 840 nm and shows no phase transition between 296 and 423 K. Moreover, a solar cell based on HC(NH 2 ) 2 PbI 3 exhibits photostability and little I – V hysteresis.