Lead-free double halide perovskite Cs3BiBr6 with well-defined crystal structure and high thermal stability for optoelectronics

Yingying Tang, Mingli Liang, Bingdong Chang, Hongyu Sun, Kaibo Zheng, Tönu Pullerits, Qijin Chi*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)

Abstract

Halide perovskites have continued to rise as attractive light absorber materials, mainly driven by their potential wide applications in the fields of solar cells, photodetectors, lasers and others. However, Pb-containing perovskites are poisonous and could cause serious potential problems to our environment. Thus, there is a strong desire to develop lead-free perovskites as environmentally friendly alternatives. Here, we have shown a successful synthesis of a non-toxic single crystalline double-halide perovskite, Cs3BiBr6, and analysed its structural characteristics in detail. This perovskite represents a new structure in terms of double-halide perovskites. The crystal structure features isolated BiBr6 polyhedra forming a zero-dimensional halide perovskite. The bandgap of this compound is measured to be 2.55 eV. High thermal stability is also clearly shown in the Cs3BiBr6 single crystal. A photodetector based on this compound is fabricated and tested, which exhibits an impressive detectivity of 0.8 × 109 Jones and low dark current under 400 nm light illumination. Overall, our results show that the Cs3BiBr6 perovskite as a lead-free perovskite has interesting structures and promising properties for optoelectronic devices.
Original languageEnglish
JournalJournal of Materials Chemistry C
Volume7
Issue number11
Pages (from-to)3369-3374
Number of pages7
ISSN2050-7526
DOIs
Publication statusPublished - 2019

Cite this

@article{f937adc1ac2e437ab88c2454092c8fe3,
title = "Lead-free double halide perovskite Cs3BiBr6 with well-defined crystal structure and high thermal stability for optoelectronics",
abstract = "Halide perovskites have continued to rise as attractive light absorber materials, mainly driven by their potential wide applications in the fields of solar cells, photodetectors, lasers and others. However, Pb-containing perovskites are poisonous and could cause serious potential problems to our environment. Thus, there is a strong desire to develop lead-free perovskites as environmentally friendly alternatives. Here, we have shown a successful synthesis of a non-toxic single crystalline double-halide perovskite, Cs3BiBr6, and analysed its structural characteristics in detail. This perovskite represents a new structure in terms of double-halide perovskites. The crystal structure features isolated BiBr6 polyhedra forming a zero-dimensional halide perovskite. The bandgap of this compound is measured to be 2.55 eV. High thermal stability is also clearly shown in the Cs3BiBr6 single crystal. A photodetector based on this compound is fabricated and tested, which exhibits an impressive detectivity of 0.8 × 109 Jones and low dark current under 400 nm light illumination. Overall, our results show that the Cs3BiBr6 perovskite as a lead-free perovskite has interesting structures and promising properties for optoelectronic devices.",
author = "Yingying Tang and Mingli Liang and Bingdong Chang and Hongyu Sun and Kaibo Zheng and T{\"o}nu Pullerits and Qijin Chi",
year = "2019",
doi = "10.1039/C8TC05480K",
language = "English",
volume = "7",
pages = "3369--3374",
journal = "Journal of Materials Chemistry C",
issn = "2050-7526",
publisher = "R S C Publications",
number = "11",

}

Lead-free double halide perovskite Cs3BiBr6 with well-defined crystal structure and high thermal stability for optoelectronics. / Tang, Yingying; Liang, Mingli; Chang, Bingdong; Sun, Hongyu; Zheng, Kaibo; Pullerits, Tönu; Chi, Qijin.

In: Journal of Materials Chemistry C, Vol. 7, No. 11, 2019, p. 3369-3374.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Lead-free double halide perovskite Cs3BiBr6 with well-defined crystal structure and high thermal stability for optoelectronics

AU - Tang, Yingying

AU - Liang, Mingli

AU - Chang, Bingdong

AU - Sun, Hongyu

AU - Zheng, Kaibo

AU - Pullerits, Tönu

AU - Chi, Qijin

PY - 2019

Y1 - 2019

N2 - Halide perovskites have continued to rise as attractive light absorber materials, mainly driven by their potential wide applications in the fields of solar cells, photodetectors, lasers and others. However, Pb-containing perovskites are poisonous and could cause serious potential problems to our environment. Thus, there is a strong desire to develop lead-free perovskites as environmentally friendly alternatives. Here, we have shown a successful synthesis of a non-toxic single crystalline double-halide perovskite, Cs3BiBr6, and analysed its structural characteristics in detail. This perovskite represents a new structure in terms of double-halide perovskites. The crystal structure features isolated BiBr6 polyhedra forming a zero-dimensional halide perovskite. The bandgap of this compound is measured to be 2.55 eV. High thermal stability is also clearly shown in the Cs3BiBr6 single crystal. A photodetector based on this compound is fabricated and tested, which exhibits an impressive detectivity of 0.8 × 109 Jones and low dark current under 400 nm light illumination. Overall, our results show that the Cs3BiBr6 perovskite as a lead-free perovskite has interesting structures and promising properties for optoelectronic devices.

AB - Halide perovskites have continued to rise as attractive light absorber materials, mainly driven by their potential wide applications in the fields of solar cells, photodetectors, lasers and others. However, Pb-containing perovskites are poisonous and could cause serious potential problems to our environment. Thus, there is a strong desire to develop lead-free perovskites as environmentally friendly alternatives. Here, we have shown a successful synthesis of a non-toxic single crystalline double-halide perovskite, Cs3BiBr6, and analysed its structural characteristics in detail. This perovskite represents a new structure in terms of double-halide perovskites. The crystal structure features isolated BiBr6 polyhedra forming a zero-dimensional halide perovskite. The bandgap of this compound is measured to be 2.55 eV. High thermal stability is also clearly shown in the Cs3BiBr6 single crystal. A photodetector based on this compound is fabricated and tested, which exhibits an impressive detectivity of 0.8 × 109 Jones and low dark current under 400 nm light illumination. Overall, our results show that the Cs3BiBr6 perovskite as a lead-free perovskite has interesting structures and promising properties for optoelectronic devices.

U2 - 10.1039/C8TC05480K

DO - 10.1039/C8TC05480K

M3 - Journal article

VL - 7

SP - 3369

EP - 3374

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

SN - 2050-7526

IS - 11

ER -