Evaluation of stability and performance of an air-processed all-inorganic perovskite solar cell
department or school: Applied Science, Faculty of
department or school: Electrical and Computer Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Shu, Ruochen
issued: 2023-02-28T08:00:00Z
issued: 2022
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: In the past decade, perovskite solar cells have attracted many concerns with the features of easy fabrication methods, high energy conversion efficiency, and relatively lower fabrication cost. Remarkable progress was witnessed on the power conversion efficiency from 3.8% to 25.5%, but the degradation issue is still one of the main barriers to the commercialization of perovskite solar cells. Using the stable CsPbBrâ as the photoactive material is regarded as a promising solution to improve device stability, however, degradation is also caused by other components in a device. The widely used Spiro-OMeTAD hole transporting material is expensive. It also needs the addition of p-dopants such as LiTFSI and 4-tBP to reach its peak performance. These additives exhibit poor stability against the harsh environment. An inexpensive p-type semiconductor CuSCN can be an ideal alternative, owing to its chemical stability and unique electronic properties. In this work, the potential of dopant-free CuSCN acting as a stable hole transporting material for CsPbBr3 solar cell was evaluated. High-quality CsPbBr3 film was prepared through an optimized two-step solution method and incorporated into all-inorganic perovskite solar cells with low-temperature solution-processed CuSCN film. The entire fabrication process was completed in an ambient environment. The best device delivered a power conversion efficiency of 5.55%, with superior air stability, ultraviolet stability, and a wide operating temperature from -20 °C to 160 °C. However, a faster degradation was witnessed during long-term thermal aging. This work demonstrates that improved stability and suitable photovoltaic performance can be achieved by using CuSCN as the hole transporting material of CsPbBrâ perovskite solar cell, in comparison to other reported results in the literature.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/80881
note: EVALUATION OF STABILITY AND PERFORMANCE OF AN AIR-PROCESSED ALL-INORGANIC PEROVSKITE SOLAR CELL by Ruochen Shu B.Eng., Donghua University, 2017 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Electrical and Computer Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) February 2022 © Ruochen Shu, 2022 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, the thesis entitled: Evaluation of stability and performance of an air-processed all-inorganic perovskite solar cell submitted by Ruochen Shu in partial fulfillment of the requirements for the degree of Master of Applied Science in Electrical and Computer Engineering Examining Committee: Dr. Peyman Servati, Professor, Department of Electrical and Computer Engineering, UBC Supervisor Dr. Alexander R. Uhl, Assistant Professor, School of Engineering, UBC Supervisory Committee Member Dr. Shahriar Mirabbasi, Professor, Department of Electrical and Computer Engineering, UBC Supervisory Committee Member iii Abstract In the past decade, perovskite solar cells have attracted many concerns with the features of easy fabrication methods, high energy conversion efficiency, and relatively lower fabrication cost. Remarkable progress was witnessed on the power conversion efficiency from 3.8% to 25.5%, but the degradation issue is still one of the main barriers to the commercialization of perovskite solar cells. Using the stable CsPbBr3 as the photoactive material is regarded as a promising solution to improve device stability, however, degradation is also caused by other components in a device. The widely used Spiro-OMeTAD hole transporting material is expensive. It also needs the addition of p-dopants such as LiTFSI and 4-tBP to reach its peak performance. These additives exhibit poor stability against the harsh environment. An i…
has type: Thesis/Dissertation
date issued: 2022-05
is shown at: 10.14288/1.0406647
language: eng
degree discipline: Electrical and Computer Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Servati, Peyman
type: Text
identifier URI: http://hdl.handle.net/2429/80881