Optoelectronic and photovoltaic properties of the air-stable organohalide semiconductor (CH3NH3)3Bi2I9

Abulikemu, Mutalifu; Ould‐Chikh, Samy; Miao, Xiaohe; Alarousu, Erkki; Murali, Banavoth; Ndjawa, Guy Olivier Ngongang; Barbé, Jérémy; Labban, Abdulrahman El; Amassian, Aram; Gobbo, Silvano Del

doi:10.1039/c6ta04657f

Cited by 155 publications

(151 citation statements)

References 48 publications

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“…Figure 1 shows the structure of MABI determined by single-crystal diffraction measured at room temperature 24 . The materials show hexagonal symmetry ( P 6 3 / m m c ) and the face-shared BiI 6 bioctahedra or (Bi 2 I 9 ) 3− clusters are separated by CH 3 NH 3 + groups.…”

Section: Resultsmentioning

confidence: 99%

“…An analogous explanation on the even poorer performance compared to the 2D layered perovskite could be the enhanced confinement of charge carriers, but this explanation has not been elucidated because the performance of a solar cell depends on multiple parameters, such as the band energy alignment of different components and the microstructure of the layers. In a more recent study, MABI shows a double-peak emission including one close to band gap coupled with one in the blue light region and is superior in stability over lead-based perovskite in ambient air 23, 24 . Interestingly, long-lived excitons on the scale of nanoseconds have also been observed, which contrasts with the low performance of devices based on MABI 23, 24 .…”

Section: Introductionmentioning

confidence: 93%

“…In a more recent study, MABI shows a double-peak emission including one close to band gap coupled with one in the blue light region and is superior in stability over lead-based perovskite in ambient air 23, 24 . Interestingly, long-lived excitons on the scale of nanoseconds have also been observed, which contrasts with the low performance of devices based on MABI 23, 24 . In this study, we synthesised a highly orientated MABI film to explore these issues.…”

Section: Introductionmentioning

confidence: 93%

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Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters

Hedley

Payne

et al. 2017

Nat Commun

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A metal-organic hybrid perovskite (CH3NH3PbI3) with three-dimensional framework of metal-halide octahedra has been reported as a low-cost, solution-processable absorber for a thin-film solar cell with a power-conversion efficiency over 20%. Low-dimensional layered perovskites with metal halide slabs separated by the insulating organic layers are reported to show higher stability, but the efficiencies of the solar cells are limited by the confinement of excitons. In order to explore the confinement and transport of excitons in zero-dimensional metal–organic hybrid materials, a highly orientated film of (CH3NH3)3Bi2I9 with nanometre-sized core clusters of Bi2I9 3− surrounded by insulating CH3NH3 + was prepared via solution processing. The (CH3NH3)3Bi2I9 film shows highly anisotropic photoluminescence emission and excitation due to the large proportion of localised excitons coupled with delocalised excitons from intercluster energy transfer. The abrupt increase in photoluminescence quantum yield at excitation energy above twice band gap could indicate a quantum cutting due to the low dimensionality.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 93%

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Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters

Hedley

Payne

et al. 2017

Nat Commun

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“…Other than molecular metal halide species, metal halide clusters containing multiple metal atoms can also serve as the building block to assemble 0D metal halide hybrids. For example, (CH 3 NH 3 ) 3 Bi 2 I 9 was first reported by Kawai et al in 1990s [136] and has recently emerged as a possible candidate as light absorber [137][138][139]. Smith et al reported the synthesis of a family of sulfonium-based lead bromide hybrids consisting of Pb 3 Br 12 6− trimers [140].…”

Section: D Metal Halide Hybridsmentioning

confidence: 99%

Organic–inorganic metal halide hybrids beyond perovskites

Zhou

Lin

Lee

et al. 2018

Materials Research Letters

107

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Organic-inorganic metal halide hybrids have emerged as new generation functional materials with exceptional structure and property tunability for a variety of applications. Besides the most investigated ABX 3 metal halide perovskites, a variety of hybrids consisting of a wide range of organic cations and metal halide anions have been developed and studied recently. Here, we provide an overview of these new materials possessing various crystallographic structures, including double perovskites, low dimensional hybrids, and other perovskite-related materials. We discuss their syntheses, functional properties, and optoelectronic applications. Challenges and opportunities are then laid out for these hybrid materials beyond perovskites. IMPACT STATEMENTBy choosing appropriate organic cations and metal halide anions, single crystalline ionically bonded hybrid materials can be assembled to possess various structures beyond the well-known ABX 3 perovskite. These hybrid materials exhibit exciting new properties with potential applications in a variety of areas. ARTICLE HISTORY

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“…They calculated an exciton binding energy of 300 meV, which is much larger than the exciton binding energy of 5 meV reported for CH 3 NH 3 PbI 3 . 54 Abulikemu et al 55 reported the synthesis of (CH 3 NH 3 ) 3 Bi 2 I 9 single crystals from reaction precursors in concentrated HI, with recrystallization from an anti-solvent. An indirect bandgap of 1.96 eV was determined, although the excitonic nature of the material was not considered in the bandgap measurement.…”

Section: A Single Crystalsmentioning

confidence: 99%

Research Update: Bismuth-based perovskite-inspired photovoltaic materials

et al. 2018

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Bismuth-based compounds have recently gained interest as solar absorbers with the potential to have low toxicity, be efficient in devices, and be processable using facile methods. We review recent theoretical and experimental investigations into bismuth-based compounds, which shape our understanding of their photovoltaic potential, with particular focus on their defect-tolerance. We also review the processing methods that have been used to control the structural and optoelectronic properties of single crystals and thin films. Additionally, we discuss the key factors limiting their device performance, as well as the future steps needed to ultimately realize these new materials for commercial applications.

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Optoelectronic and photovoltaic properties of the air-stable organohalide semiconductor (CH₃NH₃)₃Bi₂I₉

Abstract: A lead-free and air-stable organohalide semiconductor exhibiting noteworthy optoelectronic properties is investigated. With improvements in thin film processing, this material is expected to yield good solar cell efficiency.

Cited by 155 publications

References 48 publications

Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters

Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters

Organic–inorganic metal halide hybrids beyond perovskites

Research Update: Bismuth-based perovskite-inspired photovoltaic materials

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