Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Triple A-Site Cation Mixing in 2D Perovskite-Inspired Antimony Halide Absorbers for Efficient Indoor Photovoltaics

Lamminen, Noora ; Grandhi, Gopal Krishnamurthy ; Fasulo, Francesca ; Hiltunen, Arto ; Pasanen, Hannu ; Liu, Maning LU orcid ; Al-Anesi, Basheer ; Efimov, Alexander ; Ali-Löytty, Harri and Lahtonen, Kimmo , et al. (2023) In Advanced Energy Materials 13(4).
Abstract

Antimony-based perovskite-inspired materials (PIMs) are solution-processable halide absorbers with interesting optoelectronic properties, low toxicity, and good intrinsic stability. Their bandgaps around 2 eV make them particularly suited for indoor photovoltaics (IPVs). Yet, so far only the fully inorganic Cs3Sb2ClxI9−x composition has been employed as a light-harvesting layer in IPVs. Herein, the first triple-cation Sb-based PIM (CsMAFA-Sb) in which the A-site of the A3Sb2X9 structure consists of inorganic cesium alloyed with organic methylammonium (MA) and formamidinium (FA) cations is introduced. Simultaneously, the X-site is tuned to guarantee a... (More)

Antimony-based perovskite-inspired materials (PIMs) are solution-processable halide absorbers with interesting optoelectronic properties, low toxicity, and good intrinsic stability. Their bandgaps around 2 eV make them particularly suited for indoor photovoltaics (IPVs). Yet, so far only the fully inorganic Cs3Sb2ClxI9−x composition has been employed as a light-harvesting layer in IPVs. Herein, the first triple-cation Sb-based PIM (CsMAFA-Sb) in which the A-site of the A3Sb2X9 structure consists of inorganic cesium alloyed with organic methylammonium (MA) and formamidinium (FA) cations is introduced. Simultaneously, the X-site is tuned to guarantee a 2D structure while keeping the bandgap nearly unchanged. The presence of three A-site cations is essential to reduce the trap-assisted recombination pathways and achieve high performance in both outdoor and indoor photovoltaics. The external quantum efficiency peak of 77% and the indoor power conversion efficiency of 6.4% are the highest values ever reported for pnictohalide-based photovoltaics. Upon doping of the P3HT hole-transport layer with F4-TCNQ, the power conversion efficiency of CsMAFA-Sb devices is fully retained compared to the initial value after nearly 150 days of storage in dry air. This work provides an effective compositional strategy to inspire new perspectives in the PIM design for IPVs with competitive performance and air stability.

(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
keywords
2D-layered crystal structures, antimony, indoor photovoltaics, perovskite-inspired materials, triple-cation
in
Advanced Energy Materials
volume
13
issue
4
article number
2203175
publisher
Wiley-Blackwell
external identifiers
  • scopus:85144137602
ISSN
1614-6832
DOI
10.1002/aenm.202203175
language
English
LU publication?
no
id
b290b869-6159-42d6-8d10-52fcc4b08f7f
date added to LUP
2023-08-24 12:06:33
date last changed
2025-04-04 14:12:28
@article{b290b869-6159-42d6-8d10-52fcc4b08f7f,
  abstract     = {{<p>Antimony-based perovskite-inspired materials (PIMs) are solution-processable halide absorbers with interesting optoelectronic properties, low toxicity, and good intrinsic stability. Their bandgaps around 2 eV make them particularly suited for indoor photovoltaics (IPVs). Yet, so far only the fully inorganic Cs<sub>3</sub>Sb<sub>2</sub>Cl<sub>x</sub>I<sub>9−</sub><sub>x</sub> composition has been employed as a light-harvesting layer in IPVs. Herein, the first triple-cation Sb-based PIM (CsMAFA-Sb) in which the A-site of the A<sub>3</sub>Sb<sub>2</sub>X<sub>9</sub> structure consists of inorganic cesium alloyed with organic methylammonium (MA) and formamidinium (FA) cations is introduced. Simultaneously, the X-site is tuned to guarantee a 2D structure while keeping the bandgap nearly unchanged. The presence of three A-site cations is essential to reduce the trap-assisted recombination pathways and achieve high performance in both outdoor and indoor photovoltaics. The external quantum efficiency peak of 77% and the indoor power conversion efficiency of 6.4% are the highest values ever reported for pnictohalide-based photovoltaics. Upon doping of the P3HT hole-transport layer with F4-TCNQ, the power conversion efficiency of CsMAFA-Sb devices is fully retained compared to the initial value after nearly 150 days of storage in dry air. This work provides an effective compositional strategy to inspire new perspectives in the PIM design for IPVs with competitive performance and air stability.</p>}},
  author       = {{Lamminen, Noora and Grandhi, Gopal Krishnamurthy and Fasulo, Francesca and Hiltunen, Arto and Pasanen, Hannu and Liu, Maning and Al-Anesi, Basheer and Efimov, Alexander and Ali-Löytty, Harri and Lahtonen, Kimmo and Mäkinen, Paavo and Matuhina, Anastasia and Muñoz-García, Ana Belén and Pavone, Michele and Vivo, Paola}},
  issn         = {{1614-6832}},
  keywords     = {{2D-layered crystal structures; antimony; indoor photovoltaics; perovskite-inspired materials; triple-cation}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{4}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{Advanced Energy Materials}},
  title        = {{Triple A-Site Cation Mixing in 2D Perovskite-Inspired Antimony Halide Absorbers for Efficient Indoor Photovoltaics}},
  url          = {{http://dx.doi.org/10.1002/aenm.202203175}},
  doi          = {{10.1002/aenm.202203175}},
  volume       = {{13}},
  year         = {{2023}},
}