A Different, Nondestructive Method of Investigating In Situ Degradation in Hybrid Perovskite Solar Cells

A Different, Nondestructive Method of Investigating In Situ Degradation in Hybrid Perovskite Solar Cells

One of the most significant impediments to the upscaling of hybrid organic-inorganic perovskite (HOIP) solar cells is poor stability. So, to effectively establish precautionary strategies, it is necessary to have a comprehensive grasp of the mechanisms that contribute to their degradation. Conventio...

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Bibliographic Details
Published in:International journal of energy research Vol. 2024; pp. 1 - 12
Main Authors: Ugokwe, Chikezie Williams, Gebremichael, Zekarias Teklu, Ogunmoye, Kehinde, Onwuzuroha, Chibuike, Diegel, Marco, Schubert, Ulrich S., Hoppe, Harald
Format: Journal Article
Language:English
Published: Bognor Regis Hindawi 05-01-2024
Hindawi Limited
Subjects:
Aging
Aluminum
Ammonium
Ammonium compounds
Degradation
Electrodes
Electrons
Functionals
Glass substrates
Investigations
Iodides
Mass spectrometry
Methods
Nondestructive testing
Perovskites
Photons
Photovoltaic cells
Process controls
Reflectance
Scientific imaging
Solar cells
Tracking devices
Transfer matrices
United Kingdom > UK
Germany
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Summary:One of the most significant impediments to the upscaling of hybrid organic-inorganic perovskite (HOIP) solar cells is poor stability. So, to effectively establish precautionary strategies, it is necessary to have a comprehensive grasp of the mechanisms that contribute to their degradation. Conventional characterization techniques used for in situ degradation assessment of perovskite solar cells either track just universal parameters, which yields poor insights about localized degradation processes, or the technique itself induces degradation, which may confound results. Developed in this study is a nondestructive technique of analyzing in situ active layer degradation in HOIP solar cells’ active layer utilizing a combination of optical modelling and ageing device’s reflectance tracking. The optical dielectric functions of the solar cell’s functional layers were modelled using the layers’ transmitted and reflected light spectra. The transfer matrix approach was used to fit the reflectance spectrum of entire solar cell layer stacks utilizing the computed dielectric functions for individual materials and accounting for the possibility of lead iodide gradient layer formation in the model. Leveraging no other characterization method, the presence of a lead iodide gradient layer was identified within the solar cell layer stack, an unmistakable indicator of methyl ammonium lead iodide perovskite (MAPI) degradation, probing with only photons.
ISSN:0363-907X
1099-114X
DOI:10.1155/2024/8858009