Spectacular Enhancement of the Thermal and Photochemical Stability of MAPbI 3 Perovskite Films Using Functionalized Tetraazaadamantane as a Molecular Modifier

Victoria V. Ozerova, Ivan S. Zhidkov, Aleksandra Boldyreva, Nadezhda N. Dremova, Nikita A. Emelianov, Gennady V. Shilov, Lyubov A. Frolova, Ernst Z. Kurmaev, Alexey Y. Sukhorukov, Sergey M. Aldoshin and Pavel A. Troshin
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Victoria V. Ozerova: The Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Semenov Prospect 1, 141432 Chernogolovka, Russia
Ivan S. Zhidkov: Institute of Physics and Technology, Ural Federal University, Mira st. 19, 620002 Yekaterinburg, Russia
Aleksandra Boldyreva: Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, 121205 Moscow, Russia
Nadezhda N. Dremova: The Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Semenov Prospect 1, 141432 Chernogolovka, Russia
Nikita A. Emelianov: The Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Semenov Prospect 1, 141432 Chernogolovka, Russia
Gennady V. Shilov: The Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Semenov Prospect 1, 141432 Chernogolovka, Russia
Lyubov A. Frolova: The Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Semenov Prospect 1, 141432 Chernogolovka, Russia
Ernst Z. Kurmaev: Institute of Physics and Technology, Ural Federal University, Mira st. 19, 620002 Yekaterinburg, Russia
Alexey Y. Sukhorukov: N. D. Zelinsky Institute of Organic Chemistry of Russian Academy of Sciences, Leninsky Prospect, 47, 119991 Moscow, Russia
Sergey M. Aldoshin: The Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Semenov Prospect 1, 141432 Chernogolovka, Russia
Pavel A. Troshin: The Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Semenov Prospect 1, 141432 Chernogolovka, Russia

Energies, 2021, vol. 14, issue 3, 1-14

Abstract: Perovskite solar cells represent a highly promising third-generation photovoltaic technology. However, their practical implementation is hindered by low device operational stability, mostly related to facile degradation of the absorber materials under exposure to light and elevated temperatures. Improving the intrinsic stability of complex lead halides is a big scientific challenge, which might be addressed using various “molecular modifiers”. These modifiers are usually represented by some additives undergoing strong interactions with the perovskite absorber material, resulting in enhanced solar cell efficiency and/or operational stability. Herein, we present a derivative of 1,4,6,10-tetraazaadamantane, NAdCl , as a promising molecular modifier for lead halide perovskites. NAdCl spectacularly improved both the thermal and photochemical stability of methylammonium lead iodide (MAPbI 3 ) films and, most importantly, prevented the formation of metallic lead Pb 0 as a photolysis product. NAdCl improves the electronic quality of perovskite films by healing the traps for charge carriers. Furthermore, it strongly interacts with the perovskite framework and most likely stabilizes undercoordinated Pb 2+ ions, which are responsible for Pb 0 formation under light exposure. The obtained results feature 1,4,6,10-tetraazaadamantane derivatives as highly promising molecular modifiers that might help to improve the operational lifetime of perovskite solar cells and facilitate the practical implementation of this photovoltaic technology.

Keywords: perovskite solar cells; complex lead halides; photostability; thermal stability; molecular additives; molecular modifiers (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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