Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cells

Deo, Meenal ; Möllmann, Alexander ; Haddad, Jinane ; Ünlü, Feray ; Kulkarni, Ashish ; Liu, Maning LU orcid ; Tachibana, Yasuhiro ; Stadler, Daniel ; Bhardwaj, Aman and Ludwig, Tim , et al. (2022) In Nanomaterials 12(5).
Abstract
Electron transporting layers facilitating electron extraction and suppressing hole recombination at the cathode are crucial components in any thin-film solar cell geometry, including that of metal–halide perovskite solar cells. Amorphous tantalum oxide (Ta2O5) deposited by spin coating was explored as an electron transport material for perovskite solar cells, achieving power conversion efficiency (PCE) up to ~14%. Ultraviolet photoelectron spectroscopy (UPS) measurements revealed that the extraction of photogenerated electrons is facilitated due to proper alignment of bandgap energies. Steady-state photoluminescence spectroscopy (PL) verified efficient charge transport from perovskite absorber film to thin Ta2O5 layer. Our findings suggest... (More)
Electron transporting layers facilitating electron extraction and suppressing hole recombination at the cathode are crucial components in any thin-film solar cell geometry, including that of metal–halide perovskite solar cells. Amorphous tantalum oxide (Ta2O5) deposited by spin coating was explored as an electron transport material for perovskite solar cells, achieving power conversion efficiency (PCE) up to ~14%. Ultraviolet photoelectron spectroscopy (UPS) measurements revealed that the extraction of photogenerated electrons is facilitated due to proper alignment of bandgap energies. Steady-state photoluminescence spectroscopy (PL) verified efficient charge transport from perovskite absorber film to thin Ta2O5 layer. Our findings suggest that tantalum oxide as an n-type semiconductor with a calculated carrier density of ~7 × 1018/cm3 in amorphous Ta2O5 films, is a potentially competitive candidate for an electron transport material in perovskite solar cells. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; ; and (Less)
publishing date
type
Contribution to journal
publication status
published
subject
in
Nanomaterials
volume
12
issue
5
pages
14 pages
publisher
MDPI AG
external identifiers
  • pmid:35269269
ISSN
2079-4991
DOI
10.3390/nano12050780
language
English
LU publication?
no
id
bf935837-f2d7-4e86-8758-42b1489ffc5a
date added to LUP
2023-08-31 12:18:55
date last changed
2025-04-04 15:28:12
@article{bf935837-f2d7-4e86-8758-42b1489ffc5a,
  abstract     = {{Electron transporting layers facilitating electron extraction and suppressing hole recombination at the cathode are crucial components in any thin-film solar cell geometry, including that of metal–halide perovskite solar cells. Amorphous tantalum oxide (Ta2O5) deposited by spin coating was explored as an electron transport material for perovskite solar cells, achieving power conversion efficiency (PCE) up to ~14%. Ultraviolet photoelectron spectroscopy (UPS) measurements revealed that the extraction of photogenerated electrons is facilitated due to proper alignment of bandgap energies. Steady-state photoluminescence spectroscopy (PL) verified efficient charge transport from perovskite absorber film to thin Ta2O5 layer. Our findings suggest that tantalum oxide as an n-type semiconductor with a calculated carrier density of ~7 × 1018/cm3 in amorphous Ta2O5 films, is a potentially competitive candidate for an electron transport material in perovskite solar cells.}},
  author       = {{Deo, Meenal and Möllmann, Alexander and Haddad, Jinane and Ünlü, Feray and Kulkarni, Ashish and Liu, Maning and Tachibana, Yasuhiro and Stadler, Daniel and Bhardwaj, Aman and Ludwig, Tim and Kirchartz, Thomas and Mathur, Sanjay}},
  issn         = {{2079-4991}},
  language     = {{eng}},
  month        = {{02}},
  number       = {{5}},
  publisher    = {{MDPI AG}},
  series       = {{Nanomaterials}},
  title        = {{Tantalum Oxide as an Efficient Alternative Electron Transporting Layer for Perovskite Solar Cells}},
  url          = {{http://dx.doi.org/10.3390/nano12050780}},
  doi          = {{10.3390/nano12050780}},
  volume       = {{12}},
  year         = {{2022}},
}