Surfactant Tween 20 Controlled Perovskite Film Fabricated by Thermal Blade Coating for Efficient Perovskite Solar Cells

Kun-Mu Lee; Shun-Hsiang Chan; Chang-Chieh Ting; Shih-Hsuan Chen; Wei-Hao Chiu; Vembu Suryanarayanan; Jen-Fu Hsu; Ching-Yuan Liu; Ming-Chung Wu

doi:10.3390/nano12152651

Surfactant Tween 20 Controlled Perovskite Film Fabricated by Thermal Blade Coating for Efficient Perovskite Solar Cells

Nanomaterials (Basel). 2022 Aug 2;12(15):2651. doi: 10.3390/nano12152651.

Authors

Kun-Mu Lee^{1

2

3

4}, Shun-Hsiang Chan^{1

2}, Chang-Chieh Ting⁵, Shih-Hsuan Chen¹, Wei-Hao Chiu⁴, Vembu Suryanarayanan⁶, Jen-Fu Hsu³, Ching-Yuan Liu⁵, Ming-Chung Wu^{1

2

3}

Affiliations

¹ Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
² Green Technology Research Center, Chang Gung University, Taoyuan 33302, Taiwan.
³ Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan.
⁴ Center for Reliability Sciences and Technologies, Chang Gung University, Taoyuan 33302, Taiwan.
⁵ Department of Chemical and Materials Engineering, National Central University, Jhongli District, Taoyuan 32001, Taiwan.
⁶ Electroorganic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630003, India.

Abstract

In recent years, additive engineering has received considerable attention for the fabrication of high-performance perovskite solar cells (PSCs). In this study, a non-ionic surfactant, polyoxyethylene (20) sorbitan monolaurate (Tween 20), was added as an additive into the MAPbI₃ perovskite layer, and the thermal-assisted blade-coating method was used to fabricate a high-quality perovskite film. The Tween 20 effectively passivated defects and traps in the MAPbI₃ perovskite films. Such a film fabricated with an appropriate amount of Tween 20 on the substrate showed a higher photoluminescence (PL) intensity and longer carrier lifetime. At the optimal concentration of 1.0 mM Tween 20, the performance of the PSC was apparently enhanced, and the champion PSC demonstrated a PCE of 18.80%. Finally, this study further explored and compared the effect on the device performance and ambient stability of the MAPbI₃ perovskite film prepared by the spin-coating method and the thermal-assisted blade coating.

Keywords: perovskite solar cells; power conversion efficiency; surfactant Tween 20; thermal-assisted blade coating.

Abstract

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