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Updated: Apr 28, 2026

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
High-efficiency perovskite solar cells based on the black polymorph of HC(NH2)2 PbI3
Jin-Wook Lee1, Dong-Jin Seol, An-Na Cho
1Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Korea.
Abstract:
Perovskite solar cells with power conversion efficiencies exceeding 16% at AM 1.5 G one sun illumination are developed using the black polymorph of formamidnium lead iodide, HC(NH2)2 PbI3 . Compared with CH3 NH3 PbI3 , HC(NH2 )2 PbI3 extends its absoprtion to 840 nm and shows no phase transition between 296 and 423 K. Moreover, a solar cell based on HC(NH2 )2 PbI3 exhibits photostability and little I-V hysteresis.
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