Making air-stable all-inorganic perovskite solar cells through dynamic hot-air

Sawanta S. Mali, Jyoti V. Patil, Chang Kook Hong*

*Corresponding author for this work

Research output: Contribution to journalComment/debatepeer-review

17 Citations (Scopus)

Abstract

On 3rd August 2019 National Renewable Energy Laboratory (NREL) announced a new world record of 25.2% power conversion efficiency (PCE) for the hottest photovoltaic material known as perovskites. The growth in popularity and substantial improvement in the efficiency of perovskites since their discovery in 2009 is demonstrated by over 6000 publications in 2018. Although, the current world record efficiency has been reported for organic-inorganic halide perovskite, all devices were fabricated in controlled inert conditions and organic cations suffer from poor stability. Therefore, replacement of conventional organic cations by inorganic cations is one of the most promising approaches to make thermally stable photovoltaics. However, all-inorganic perovskite solar cells (PSCs) (herein AIPSCs) composition and deposition techniques limit the real-time stability. This article previews the dynamic hot air (DHA) method used for making CsPbI2Br-based perovskites with improved air-thermal stability using barium (Ba2+) alkaline earth metal ion doping. Interestingly, the feasibility of this DHA method toward large area fabrication is also demonstrated.
Original languageEnglish
Article number100880
Number of pages4
JournalNano Today
Volume33
Early online date7 Jun 2020
DOIs
Publication statusPublished - 31 Aug 2020

Funding

This research was supported by the National Research Foundation of Korea (NRF) (NRF-2020R1A2C2004880) and National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (2016H1D3A1909289) for an outstanding overseas young researcher. This work was supported by Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2018R1A6A1A03024334) and National Research Foundation of Korea (NRF) grant funded by the Korea Government (2018R1C1B6008218).

Keywords

  • perovskites
  • photovoltaic material
  • power conversion efficiency
  • dynamic hot air
  • air-thermal stability

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