Publication result detail

Advanced space-charge-limited current model for analyzing fermi level shift in the bandgap of halide perovskites

GAVRANOVIĆ, S.; ZMEŠKAL, O.; WEITER, M.; POSPÍŠIL, J.

Original Title

Advanced space-charge-limited current model for analyzing fermi level shift in the bandgap of halide perovskites

English Title

Advanced space-charge-limited current model for analyzing fermi level shift in the bandgap of halide perovskites

Type

WoS Article

Original Abstract

Understanding how charge carriers behave in semiconductors is key to improving next-generation optoelectronic devices. Here we introduce an advanced space-charge-limited current model that enables detailed extraction of mobility, charge carrier concentrations, and Fermi level position from voltage- and energy-dependent analysis. Applying this model to two promising halide perovskites, methylammonium lead bromide and methylammonium lead iodide, we observe a strong photoresponse, with significant increases in microscopic mobility and free carrier density under illumination. Interestingly, the behavior of trapped charges and Fermi level shifts differs between the two materials, revealing distinct transport mechanisms. This model offers a powerful tool for characterizing semiconductors and could accelerate the development of more efficient light-sensitive devices.

English abstract

Understanding how charge carriers behave in semiconductors is key to improving next-generation optoelectronic devices. Here we introduce an advanced space-charge-limited current model that enables detailed extraction of mobility, charge carrier concentrations, and Fermi level position from voltage- and energy-dependent analysis. Applying this model to two promising halide perovskites, methylammonium lead bromide and methylammonium lead iodide, we observe a strong photoresponse, with significant increases in microscopic mobility and free carrier density under illumination. Interestingly, the behavior of trapped charges and Fermi level shifts differs between the two materials, revealing distinct transport mechanisms. This model offers a powerful tool for characterizing semiconductors and could accelerate the development of more efficient light-sensitive devices.

Keywords

bulk trap spectroscopy; carrier mobility;performance;lengths;solids;TMSCLC

Key words in English

bulk trap spectroscopy; carrier mobility;performance;lengths;solids;TMSCLC

Authors

GAVRANOVIĆ, S.; ZMEŠKAL, O.; WEITER, M.; POSPÍŠIL, J.

Released

04.07.2025

Publisher

NATURE PORTFOLIO

Location

BERLIN

ISBN

2399-3650

Periodical

Communications Physics

Volume

8

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

10

Pages count

10

URL

https://www.nature.com/articles/s42005-025-02202-1

Full text in the Digital Library

http://hdl.handle.net/11012/255423

BibTex

@article{BUT198537,
  author="Stevan {Gavranović} and Oldřich {Zmeškal} and Martin {Weiter} and Jan {Pospíšil}",
  title="Advanced space-charge-limited current model for analyzing fermi level shift in the bandgap of halide perovskites",
  journal="Communications Physics",
  year="2025",
  volume="8",
  number="1",
  pages="1--10",
  doi="10.1038/s42005-025-02202-1",
  url="https://www.nature.com/articles/s42005-025-02202-1"
}

Documents

Gavranovic_et_al-2025-Communications_Physics