Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells

American Association for the Advancement of Science (AAAS) - Tập 356 Số 6345 - Trang 1376-1379 - 2017
Woon Seok Yang1, Byung-Wook Park1, Eui Hyuk Jung2, Nam Joong Jeon2, Young Chan Kim2, Dong Uk Lee3, Seong Sik Shin2, Jangwon Seo2, Eun Kyu Kim4, Jun Hong Noh2,5, Sang Il Seok2,1
1Perovtronics Research Center, School of Natural Science, and School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Korea.
2Division of Advanced Materials, Korea Research Institute of Chemical Technology, 141 Gajeong-Ro, Yuseong-Gu, Daejeon 34114, Korea
3NAND Product Engineering Group, SK Hynix Inc., Icheon 17336, Korea.
4Department of Physics and Quantum Function Research Laboratory, Hanyang University, Seoul 04763, Korea.
5School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, 136-713, Republic of Korea

Tóm tắt

Healing defects with triiodide ions Deep-level defects in organic-inorganic perovskites decrease the performance of solar cells through unproductive recombination of charge carriers. Yang et al. show that introducing additional triiodide ions during the formation of layers of formamidinium lead iodide, which also contain small amounts of methylammonium lead bromide, suppresses the formation of deep-level defects. This process boosts the certified efficiency of 1-cm 2 solar cells to almost 20%. Science , this issue p. 1376

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American Association for the Advancement of Science (AAAS)

Tập 356 Số 6345

1376-1379

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