Cs and Br tuning to achieve ultralow-hysteresis and high-performance indoor triple cation perovskite solar cell with low-cost carbon-based electrode

Ladda Srathongsian; Anusit Kaewprajak; Atittaya Naikaew; Chaowaphat Seriwattanachai; Napan Phuphathanaphong; Anuchytt Inna; Thana Chotchuangchutchaval; Woraprom Passatorntaschakorn; Pisist Kumnorkaew; Somboon Sahasithiwat; Duangmanee Wongratanaphisan; Pipat Ruankham; Ratchadaporn Supruangnet; Hideki Nakajima; Pasit Pakawatpanurut; Pongsakorn Kanjanaboos

doi:10.1016/j.isci.2024.109306

Cs and Br tuning to achieve ultralow-hysteresis and high-performance indoor triple cation perovskite solar cell with low-cost carbon-based electrode

iScience. 2024 Feb 22;27(4):109306. doi: 10.1016/j.isci.2024.109306. eCollection 2024 Apr 19.

Authors

Ladda Srathongsian¹, Anusit Kaewprajak², Atittaya Naikaew¹, Chaowaphat Seriwattanachai¹, Napan Phuphathanaphong¹, Anuchytt Inna¹, Thana Chotchuangchutchaval^{3

4}, Woraprom Passatorntaschakorn⁵, Pisist Kumnorkaew², Somboon Sahasithiwat⁶, Duangmanee Wongratanaphisan⁵, Pipat Ruankham⁵, Ratchadaporn Supruangnet⁷, Hideki Nakajima⁷, Pasit Pakawatpanurut^{8

9}, Pongsakorn Kanjanaboos^{1

9}

Affiliations

¹ School of Materials Science and Innovation, Faculty of Science, Mahidol University, Nakhon Pathom 73170, Thailand.
² National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand.
³ Center of Sustainable Energy and Engineering Materials (SEEM), College of Industrial Technology, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand.
⁴ Department of Mechanical Engineering Technology, College of Industrial Technology, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand.
⁵ Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
⁶ National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency, Pathum Thani 12120, Thailand.
⁷ Synchrotron Light Research Institute (Public Organization), Nakhon Ratchasima 30000, Thailand.
⁸ Department of Chemistry and Center of Sustainable Energy and Green Materials, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.
⁹ Center of Excellence for Innovation in Chemistry (PERCH CIC), Ministry of Higher Education, Science, Research and Innovation, Bangkok 10400, Thailand.

Abstract

With high efficacy for electron-photon conversion under low light, perovskite materials show great potential for indoor solar cell applications to power small electronics for internet of things (IoTs). To match the spectrum of an indoor LED light source, triple cation perovskite composition was varied to adjust band gap values via Cs and Br tuning. However, increased band gaps lead to morphology, phase instability, and defect issues. 10% Cs and 30% Br strike the right balance, leading to low-cost carbon-based devices with the highest power conversion efficiency (PCE) of 31.94% and good stability under low light cycles. With further improvement in device stack and size, functional solar cells with the ultralow hysteresis index (HI) of 0.1 and the highest PCE of 30.09% with an active area of 1 cm² can be achieved. A module from connecting two such cells in series can simultaneously power humidity and temperature sensors under 1000 lux.

Keywords: Devices; Energy materials; Materials science.