Augmenting the performance and stability of perovskite solar cells by introducing cesium iodide doping into the PbI2 film via a two-step deposition method
Kun-Mu Lee a
a Chang Gung University, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City 33302, Taiwan, Taiwan, Republic of China
Poster, Kun-Mu Lee, 059
Publication date: 24th October 2023

In recent years, the perovskite solar cell has achieved over 25% of power conversion efficiency. Widely used one-step spin coating is known to have difficulty in controlling perovskite films. To overcome this problem, perovskite films were produced by using two-step spin coating. These effects of doping PbI2 solutions with cesium iodide (CsI) are studied. The Cs-doped PbI2 film was rougher than the pristine PbI2 film, which made it more absorbent to the second-step solution. Consequently, a smoother and flatter perovskite film can be produced. So, it can improve the crystallinity, grain size, and morphology of perovskite film when dopant CsI in PbI2. And the photovoltaic performance of the device with Cs-dopant is also expected to improve. Finally, the power conversion efficiency (PCE) of the solar cell by doping 0.10M CsI in PbI2 increases from 17.45% to 20.29%, compared to the pristine device. Furthermore, the device showed excellent stability, maintaining 80% of its initial PCE after 350 h of continuous irradiation.

K.-M. Lee thanks the support from Ministry of Science and Technology, Taiwan (Grant Number MOST 108-2628-E-182-003-MY3), Chang Gung University (QZRPD181).

We use our own and third party cookies for analysing and measuring usage of our website to improve our services. If you continue browsing, we consider accepting its use. You can check our Cookies Policy in which you will also find how to configure your web browser for the use of cookies. More info