Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Enhancing the Microstructure of Perovskite-Inspired Cu-Ag-Bi-I Absorber for Efficient Indoor Photovoltaics

Grandhi, G. Krishnamurthy ; Al-Anesi, Basheer ; Pasanen, Hannu ; Ali-Löytty, Harri ; Lahtonen, Kimmo ; Granroth, Sari ; Christian, Nino ; Matuhina, Anastasia ; Liu, Maning LU orcid and Berdin, Alex , et al. (2022) In Small 18(35).
Abstract

Lead-free perovskite-inspired materials (PIMs) are gaining attention in optoelectronics due to their low toxicity and inherent air stability. Their wide bandgaps (≈2 eV) make them ideal for indoor light harvesting. However, the investigation of PIMs for indoor photovoltaics (IPVs) is still in its infancy. Herein, the IPV potential of a quaternary PIM, Cu2AgBiI6 (CABI), is demonstrated upon controlling the film crystallization dynamics via additive engineering. The addition of 1.5 vol% hydroiodic acid (HI) leads to films with improved surface coverage and large crystalline domains. The morphologically-enhanced CABI+HI absorber leads to photovoltaic cells with a power conversion efficiency of 1.3% under 1 sun... (More)

Lead-free perovskite-inspired materials (PIMs) are gaining attention in optoelectronics due to their low toxicity and inherent air stability. Their wide bandgaps (≈2 eV) make them ideal for indoor light harvesting. However, the investigation of PIMs for indoor photovoltaics (IPVs) is still in its infancy. Herein, the IPV potential of a quaternary PIM, Cu2AgBiI6 (CABI), is demonstrated upon controlling the film crystallization dynamics via additive engineering. The addition of 1.5 vol% hydroiodic acid (HI) leads to films with improved surface coverage and large crystalline domains. The morphologically-enhanced CABI+HI absorber leads to photovoltaic cells with a power conversion efficiency of 1.3% under 1 sun illumination—the highest efficiency ever reported for CABI cells and of 4.7% under indoor white light-emitting diode lighting—that is, within the same range of commercial IPVs. This work highlights the great potential of CABI for IPVs and paves the way for future performance improvements through effective passivation strategies.

(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
additive engineering, Cu AgBiI, film morphology, indoor photovoltaics, perovskite-inspired materials
in
Small
volume
18
issue
35
article number
2203768
publisher
John Wiley & Sons Inc.
external identifiers
  • pmid:35808963
  • scopus:85133569054
ISSN
1613-6810
DOI
10.1002/smll.202203768
language
English
LU publication?
no
id
a2158c43-0913-4f24-a556-4f9e6a17f2f5
date added to LUP
2023-08-24 12:15:28
date last changed
2024-04-20 02:33:10
@article{a2158c43-0913-4f24-a556-4f9e6a17f2f5,
  abstract     = {{<p>Lead-free perovskite-inspired materials (PIMs) are gaining attention in optoelectronics due to their low toxicity and inherent air stability. Their wide bandgaps (≈2 eV) make them ideal for indoor light harvesting. However, the investigation of PIMs for indoor photovoltaics (IPVs) is still in its infancy. Herein, the IPV potential of a quaternary PIM, Cu<sub>2</sub>AgBiI<sub>6</sub> (CABI), is demonstrated upon controlling the film crystallization dynamics via additive engineering. The addition of 1.5 vol% hydroiodic acid (HI) leads to films with improved surface coverage and large crystalline domains. The morphologically-enhanced CABI+HI absorber leads to photovoltaic cells with a power conversion efficiency of 1.3% under 1 sun illumination—the highest efficiency ever reported for CABI cells and of 4.7% under indoor white light-emitting diode lighting—that is, within the same range of commercial IPVs. This work highlights the great potential of CABI for IPVs and paves the way for future performance improvements through effective passivation strategies.</p>}},
  author       = {{Grandhi, G. Krishnamurthy and Al-Anesi, Basheer and Pasanen, Hannu and Ali-Löytty, Harri and Lahtonen, Kimmo and Granroth, Sari and Christian, Nino and Matuhina, Anastasia and Liu, Maning and Berdin, Alex and Pecunia, Vincenzo and Vivo, Paola}},
  issn         = {{1613-6810}},
  keywords     = {{additive engineering; Cu AgBiI; film morphology; indoor photovoltaics; perovskite-inspired materials}},
  language     = {{eng}},
  month        = {{09}},
  number       = {{35}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Small}},
  title        = {{Enhancing the Microstructure of Perovskite-Inspired Cu-Ag-Bi-I Absorber for Efficient Indoor Photovoltaics}},
  url          = {{http://dx.doi.org/10.1002/smll.202203768}},
  doi          = {{10.1002/smll.202203768}},
  volume       = {{18}},
  year         = {{2022}},
}