Degradation of perovskite thin films and solar cells with candle soot C/Ag electrode exposed in a control ambient
Document Type
Article
Publication Date
12-1-2021
Abstract
Perovskite solar cells (PSCs) have already achieved efficiencies of over 25%; however, their instability and degradation in the operational environment have prevented them from becoming commercially viable. Understanding the degradation mechanism, as well as improving the fabrication technique for achieving high-quality perovskite films, is crucial to overcoming these shortcomings. In this study, we investigated details in the changes of physical properties associated with the degradation and/or decomposition of perovskite films and solar cells using XRD, FESEM, EDX, UV-Vis, Hall-effect, and current-voltage (I-V) measurement techniques. The dissociation, as well as the intensity of perovskite peaks, have been observed as an impact of film degradation by humidity. The decomposition rate of perovskite film has been estimated from the structural and optical changes. The performance degradation of novel planner structure PSCs has been investigated in detail. The PSCs were fabricated in-room ambient using candle soot carbon and screen-printed Ag electrode. It was found that until the perovskite film decomposed by 30%, the film properties and cell efficiency remained stable.
Keywords
Candle soot, C, Ag electrode, Degradation rate, PbI2 conversion, Defect distribution, Perovskite solar cells
Divisions
fac_eng
Funders
Malaysian Ministry of Higher Education through FRGS[FRGS/1/2020/TK0/UM/02/33],King Saud University[RSP-2021/34],Universiti Tenaga Nasional (The Energy University) of Malaysia,Institute of Sustainable Energy,Universiti Malaya
Publication Title
Nanomaterials
Volume
11
Issue
12
Publisher
MDPI
Publisher Location
ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND