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Poster De Conférence Année : 2024

Surface photovoltage study of perovskite materials and structures for solar cell applications

Résumé

Surface photovoltage study of perovskite materials and structures for solar cell applications

Background:

• Perovskites (PSK) are considered as a perspective material for the 4 th generation solar cells because of their tunable bandgap around 1.6 eV via compositional engineering, high absorption coefficient and steep absorption edge. • The power conversion efficiency of PSK solar cells has grown from 14.1% to 26.1% during the last 10 years (2013-2023) • However, their stability is still a problem due to the degradation of the optoelectronic properties of the PSK light absorber, as well as of the selective carrier transport layers (SCTL) used to selectively extract photogenerated carriers.

A challenge: Understand the carrier generation, transport and recombination in the PSK and at the PSK/SCTL interface and surface.

Experimental samples:

Fully inorganic lead halide PSK thin films CsPbI 3 and partial solar cell structures 1) electron transport layer TiO 2 deposited on FTO/glass substrates by spray pyrolysis (FTO=fluorine-doped tin oxide) 2) Perovskite -deposited via spin-coating 3) glass sheet a few μm thick to protect the perovskite

Surface Photovoltage (SPV) method:

The Metal-insulator-semiconductor (MIS) SPV operation mode • chopped light, flux density ~10 13 cm -2 s -1 • SPV = V s light -V s dark

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Dates et versions

hal-04681597 , version 1 (29-08-2024)

Identifiants

  • HAL Id : hal-04681597 , version 1

Citer

Vesselin Donchev, Kiril Kirilov, Iliya Stoyanov, Davide Regaldo, Javid Hajhemati, et al.. Surface photovoltage study of perovskite materials and structures for solar cell applications. Sofia University SUMMIT conference, Apr 2024, Sofia, Bulgaria. ⟨hal-04681597⟩
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