Analysing the performance ceiling of RbSnGeI3-based lead-free stable perovskite solar cell

We explored a lead-free, stable and inorganic perovskite absorber RbSn 0.5 Ge 0.5 I 3 for photovoltaic application. The stability in RbSn 0.5 Ge 0.5 I 3 is due to the passivation effect of Ge at the mixed Sn-Ge B site the absorber. A detailed analysis of extrinsic losses is performed theoretically b...

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Bibliographic Details
Published in:Optical and quantum electronics 2023-08, Vol.55 (8), Article 734
Main Authors: Gomathi, S., Sivapriya, J., Kalaiyarasi, M., Sivakumar, J., Rubavathy, S. Jaanaa, Kumar, Atul
Format: Article
Language:English
Subjects:
Absorbers
Characterization and Evaluation of Materials
Computer Communication Networks
Electrical Engineering
Germanium
Lasers
Lead free
Optical Devices
Optics
Perovskites
Photonics
Photovoltaic cells
Physics
Physics and Astronomy
Shock resistance
Solar cells
Thermalization (energy absorption)
Tin
Waterfalls
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Summary:We explored a lead-free, stable and inorganic perovskite absorber RbSn 0.5 Ge 0.5 I 3 for photovoltaic application. The stability in RbSn 0.5 Ge 0.5 I 3 is due to the passivation effect of Ge at the mixed Sn-Ge B site the absorber. A detailed analysis of extrinsic losses is performed theoretically by utilizing the optical and electrical characteristics of the RbSn 0.5 Ge 0.5 I 3 system. Evaluation of various recombination regimes has provided a performance ceiling limit and correspondingly an optimal device design. We summarised the extent of spectrum (thermalization and non-absorption) losses and extrinsic (resistance and Shockley–Read–Hall (SRH) limited) losses in RbSn 0.5 Ge 0.5 I 3 . Finally, an efficiency waterfall chart summarises the RbSn 0.5 Ge 0.5 I 3 efficiency for different extrinsic loss regimes. Results summarized in this study are expected to stimulate experimentalists in this field to fabricate a stable lead-free highly efficient perovskite solar cell.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-023-04980-w