Stable perovskite based photodetector in impedance and capacitance mode

Nowadays perovskite emerges as a promising photosensitive material for next-generation solution-processed devices. Perovskite-based solar cells degrade in ambient conditions up to some extent, after which they are discarded. In our work, we are using reusing the degraded cells as a high-performance...

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Main Authors: Qasuria T.A., Alam S., Karimov K.S., Fatima N., Alharthi Y.S., Alharbi H.F., Alharthi N.H., Amin N., Akhtaruzzaman M.
Other Authors: 36180306200
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Published: Elsevier B.V. 2023
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spelling my.uniten.dspace-242732023-05-29T15:22:32Z Stable perovskite based photodetector in impedance and capacitance mode Qasuria T.A. Alam S. Karimov K.S. Fatima N. Alharthi Y.S. Alharbi H.F. Alharthi N.H. Amin N. Akhtaruzzaman M. 36180306200 57213490911 35610344300 56567742200 57190339662 57188221000 55942800300 7102424614 57195441001 Nowadays perovskite emerges as a promising photosensitive material for next-generation solution-processed devices. Perovskite-based solar cells degrade in ambient conditions up to some extent, after which they are discarded. In our work, we are using reusing the degraded cells as a high-performance stable perovskite-based photodetector. The symmetry of the detector is FTO/PEDOT:PSS/Perovskite/PC61BM/CdS/Ag showing sensitivity to light with respect to (w.r.t) impedance and capacitance. To enhance the excitons generation and absorption of light, the electron transport layer of cadmium sulfide along with PC61BM is selected and PEDOT:PSS layer is used for hole transportation. Atomic force microscopy, X-ray diffraction, and UV-absorption spectrum were obtained to study the surface morphology, composition, and absorption of the perovskite layer. The electric parameters within the frequency range 100 Hz to 200 kHz of samples under the effect of light were investigated. Experimental results showed that with the change in light intensity from dark to 325 W/m2, the highest impedance and capacitance were observed at 100 Hz. The impedance sensitivity is ?126.154 k? m2/W and the uppermost capacitance sensitivity w.r.t light intensity is 6.77 pF m2/W. Frequency-impedance and capacitance relationships and sensitivities were also measured. The results showed that in the range from 100 Hz to 200 kHz the maximum impedance sensitivity is ?343.37 ?/Hz in dark condition. While the capacitance sensitivity was highest when light intensity was 325 W/m2 (?37.27 pF/kHz), respectively. We attribute these observations due to the generation of electron-hole pairs under light and by the increase of their concentration, by the presence of the built-in capacitance and possible frequency dependence of the mobility of the charges. � 2019 The Authors Final 2023-05-29T07:22:32Z 2023-05-29T07:22:32Z 2019 Article 10.1016/j.rinp.2019.102699 2-s2.0-85072868248 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072868248&doi=10.1016%2fj.rinp.2019.102699&partnerID=40&md5=78b1ef4b114c13313af5e7afdcd941c8 https://irepository.uniten.edu.my/handle/123456789/24273 15 102699 All Open Access, Gold Elsevier B.V. Scopus
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description Nowadays perovskite emerges as a promising photosensitive material for next-generation solution-processed devices. Perovskite-based solar cells degrade in ambient conditions up to some extent, after which they are discarded. In our work, we are using reusing the degraded cells as a high-performance stable perovskite-based photodetector. The symmetry of the detector is FTO/PEDOT:PSS/Perovskite/PC61BM/CdS/Ag showing sensitivity to light with respect to (w.r.t) impedance and capacitance. To enhance the excitons generation and absorption of light, the electron transport layer of cadmium sulfide along with PC61BM is selected and PEDOT:PSS layer is used for hole transportation. Atomic force microscopy, X-ray diffraction, and UV-absorption spectrum were obtained to study the surface morphology, composition, and absorption of the perovskite layer. The electric parameters within the frequency range 100 Hz to 200 kHz of samples under the effect of light were investigated. Experimental results showed that with the change in light intensity from dark to 325 W/m2, the highest impedance and capacitance were observed at 100 Hz. The impedance sensitivity is ?126.154 k? m2/W and the uppermost capacitance sensitivity w.r.t light intensity is 6.77 pF m2/W. Frequency-impedance and capacitance relationships and sensitivities were also measured. The results showed that in the range from 100 Hz to 200 kHz the maximum impedance sensitivity is ?343.37 ?/Hz in dark condition. While the capacitance sensitivity was highest when light intensity was 325 W/m2 (?37.27 pF/kHz), respectively. We attribute these observations due to the generation of electron-hole pairs under light and by the increase of their concentration, by the presence of the built-in capacitance and possible frequency dependence of the mobility of the charges. � 2019 The Authors
author2 36180306200
author_facet 36180306200
Qasuria T.A.
Alam S.
Karimov K.S.
Fatima N.
Alharthi Y.S.
Alharbi H.F.
Alharthi N.H.
Amin N.
Akhtaruzzaman M.
format Article
author Qasuria T.A.
Alam S.
Karimov K.S.
Fatima N.
Alharthi Y.S.
Alharbi H.F.
Alharthi N.H.
Amin N.
Akhtaruzzaman M.
spellingShingle Qasuria T.A.
Alam S.
Karimov K.S.
Fatima N.
Alharthi Y.S.
Alharbi H.F.
Alharthi N.H.
Amin N.
Akhtaruzzaman M.
Stable perovskite based photodetector in impedance and capacitance mode
author_sort Qasuria T.A.
title Stable perovskite based photodetector in impedance and capacitance mode
title_short Stable perovskite based photodetector in impedance and capacitance mode
title_full Stable perovskite based photodetector in impedance and capacitance mode
title_fullStr Stable perovskite based photodetector in impedance and capacitance mode
title_full_unstemmed Stable perovskite based photodetector in impedance and capacitance mode
title_sort stable perovskite based photodetector in impedance and capacitance mode
publisher Elsevier B.V.
publishDate 2023
_version_ 1806426711735140352
score 13.214268