Effect of tertiary butylpyridine in stability of methylammonium lead iodide perovskite thin films

Perovskite material is a great visible light absorber in perovskite solar cells (PSCs). PSC has reported power conversion efficiency (PCE) of 22.1%. However, performance instability of the solar device base on this material hampers its commercialization. One of the factors responsible for performanc...

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Bibliographic Details
Published in:Bulletin of materials science 2020-12, Vol.43 (1), p.40, Article 40
Main Authors: Ezike, S C, Alabi, A B, Ossai, A N, Aina, A O
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Commercialization
Degradation
Diffractometers
Efficiency
Energy conversion efficiency
Engineering
Fourier transforms
Glass substrates
Infrared spectrometers
Infrared spectrophotometers
Light
Materials Science
Perovskites
Photovoltaic cells
Solar cells
Solvents
Spectrophotometers
Stability
Temperature
Thin films
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Summary:Perovskite material is a great visible light absorber in perovskite solar cells (PSCs). PSC has reported power conversion efficiency (PCE) of 22.1%. However, performance instability of the solar device base on this material hampers its commercialization. One of the factors responsible for performance instability in the cell is temperature. In this work, we carried out stability study of perovskite film treated with tertiary butylpyridine (tBP) as a surface modifier. Concentrations of tBP added in perovskite material film were varied and the samples were subjected to temperature degradation test in a temperature-controlled chamber for 120 h. Ultraviolet–visible (UV–Vis) spectrophotometers, Fourier-transform infrared (FT-IR) spectrometers and X-ray diffractometers (XRD) were used to characterize the properties of the temperature-stability-tested samples. The results show that the sample treated with 100 μ l of tBP has the best resistance to temperature degradation after the duration of the test. The surface-modified perovskite films, with 100 μ l of tBP, may reduce the degradation of PSCs.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-019-2002-2