A Facile and Effective Ozone Exposure Method for Wettability and Energy-Level Tuning of Hole-Transporting Layers in Lead-Free Tin Perovskite Solar Cells
- Authors
- Nam, Jeong-Seok; Kim, Kyusun; Han, Jiye; Kim, Dawoon; Chung, In; Wang, Dong Hwan; Jeon, Il
- Issue Date
- 15-Sep-2021
- Publisher
- AMER CHEMICAL SOC
- Keywords
- lead-free; tin perovskite solar cell; restriction of hazardous substances directive (RoHS); ozone exposure; photovoltaics
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.13, no.36, pp 42935 - 42943
- Pages
- 9
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 13
- Number
- 36
- Start Page
- 42935
- End Page
- 42943
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/50072
- DOI
- 10.1021/acsami.1c13546
- ISSN
- 1944-8244
1944-8252
- Abstract
- Lead-free perovskite solar cells (PSCs) have attracted interest among scientists searching for eco-friendly energy harvesting devices. Herein, the effects of ozone exposure on poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PE-DOT:PSS) in lead-free tin halide PSCs as a facile and low-cost process for improving device performance are analyzed. Two types of tin-based PSCs and one typical lead-based PSC were fabricated. The ozone exposure on PEDOT:PSS increases the short-circuit current density (J(SC)) and the fill factor (FF) of PSCs in all cases with perovskite grain enlargement and hole-mobility enhancement of the devices, respectively. For open-circuit voltage (V-OC), the outcome depends on the band gap and the energy levels of the perovskite films. While ozone exposure treatment is favorable for PEA(0.15)FA(0.)(85)SnI(3)-based tin PSCs, V-OC decreases with ozone exposure in the case of Ge:EDA(0.)(01)FA(0.)(98)SnI(3)-based tin PSCs because of a misalignment of the energy levels. Regardless, the efficiency of PEA(0.15)FA(0.)(85)SnI(3)-based tin PSCs increases from 8.7 to 10.1% when measured inside a glovebox upon ozone exposure of PEDOT:PSS. The efficiency of Ge:EDA(0.01)FA(0.98)SnI(3)-based tin PSCs increases from 6.8 to 8.1%, and the devices retain an efficiency of 5.0% even after 50 days in air.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of ICT Engineering > School of Integrative Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/50072)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.