The Rise of Highly Efficient and Stable Perovskite Solar Cells
- 21 March 2017
- journal article
- editorial
- Published by American Chemical Society (ACS) in Accounts of Chemical Research
- Vol. 50 (3), 487-491
- https://doi.org/10.1021/acs.accounts.6b00492
Abstract
Recently, metal halide perovskite solar cells (PSCs) of the general formular ABX3 where A is a monovalent cation, that is, methylammonium (MA) CH3NH3+•, formamidinium CH2(NH2)2+, Cs+, or Rb+, B stands for Pb(II) or Sn(II), and X for iodide or bromide have achieved solar to electric power conversion efficiencies (PCEs) above 22%, exceeding the efficiency of the present market leader polycrystalline silicon while using 1000 times less light harvesting material and simple solution processing for their fabrication. The top performing devices all employ formulations containing a mixture of up to four A cations and iodide as well as a small fraction of bromide as anion, whose emergence will be described in this Commentary. Apart from leading the current PV efficiency race, these new perovskite materials exhibit intense electroluminescence and an extraordinarily high stability under heat and light stress.Keywords
Funding Information
- Bundesamt f?r Energie
- Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung (200021-157135/1, 407040-153952, 407040-153990)
- Seventh Framework Programme (291771)
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