Conference Publication
Preparing High Performance Perovskite Solar Cells with Dopant-Free HTM by Thermal-Assisted Blade Coating Method
Author affiliations and roles
- 1Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan
- 2Center for Green Technology, Chang Gung University, Taoyuan 33302, Taiwan
- 3Department of Chemistry, Soochow University, Taipei 11102, Taiwan
台灣化學工程學會68週年年會（2021 TwIChE） (2022).
Research topic: Perovskite Solar Cells
Conference information
Abstract
Perovskite solar cells (PSCs) emerging as a promising photovoltaic technology with high efficiency and low manufacturing cost are paid attention from all over the world. However, the upscaling of PSCs becomes an important issue for commercial applications. Currently, different deposition techniques, such as slot die [1], inkjet printing [2], blade-coating [3], and roll-to-roll printing [4], were developed and drew considerable research attention. Among these techniques, blade-coating method is a simple, low-cost and effective material-usage technique. On the other hands, very few alternative small molecules can replace the benchmark spiro-OMeTAD in a fully printed n-i-p PSCs. And there is a strong need in developing compatible dopant-free HTM for high-efficiency printed PSCs. In this work, we demonstrate the fabrication of PSCs devices based on a donor–acceptor-donor (D-A-D) doping-free HTM, namely CB. The films in perovskite solar cell are all formed by TABC (thermal-assisted blade coating) processes. The PSCs fabricated by dopant-free CB as HTM exhibited an impressive efficiency of 21.09%, which is higher than that with spiro-OMeTAD (14.28%). The TABC-based dopant-free CB-based PSCs exhibited significantly improved long-term stability, retaining more than 94% efficiency after 500 hours compared to that using doped spiro-OMeTAD under a relative humidity of ~50%. This result demonstrated that the newly developed CB is a promising candidate HTM for high performance fully printable PSCs.