Efficiency improvement of P3CT-Na based MAPbI3solar cells with a simple wetting process

Said Kassou; Jia-Ren Wu; Diksha Thakur; Anjali Chandel; Shou-En Chiang; Kai-Jen Cheng; Sheng-Hui Chen; Ji-Lin Shen; Sheng Hsiung Chang

doi:10.1088/1361-6528/ac0380

Efficiency improvement of P3CT-Na based MAPbI₃solar cells with a simple wetting process

Nanotechnology. 2021 Jun 4;32(34). doi: 10.1088/1361-6528/ac0380.

Authors

Said Kassou¹, Jia-Ren Wu¹, Diksha Thakur^{1

2}, Anjali Chandel^{1

2}, Shou-En Chiang¹, Kai-Jen Cheng^{1

3}, Sheng-Hui Chen³, Ji-Lin Shen¹, Sheng Hsiung Chang^{1

2}

Affiliations

¹ Department of Physics, Chung Yuan Christian University, Taoyuan 320314, Taiwan, Republic of China.
² R&D Center for Membrane Technology and Center for Nanotechnology, Chung Yuan Christian University, Taoyuan 320314, Taiwan, Republic of China.
³ Department of Optics and Photonics, National Central University, Taoyuan 320317, Taiwan, Republic of China.

PMID: 34015780
DOI: 10.1088/1361-6528/ac0380

Abstract

The averaged power conversion efficiency of polyelectrolytes (P3CT-Na) based MAPbI₃solar cells can be increased from 14.94% to 17.46% with a wetting method before the spin-coating process of MAPbI₃precursor solutions. The effects of the wetting process on the surface, structural, optical and excitonic properties of MAPbI₃thin films are investigated by using the atomic-force microscopic images, x-ray diffraction patterns, transmittance spectra, photoluminescence spectra and Raman scattering spectra. The experimental results show that the wetting process of MAPbI₃precursor solution on top of the P3CT-Na/ITO/glass substrate can be used to manipulate the molecular packing structure of the P3CT-Na thin film, which determines the formation of MAPbI₃thin films.

Keywords: P3CT-Na thin film; stable inverted-type MAPbI3 solar cells; wetting process.