One-step solution synthesis and stability study of inorganic perovskite semiconductor Cs2SnI6

Nairui, Xiao; Tang, Yehua; Qiu, Yali; Duoduo, Liu; Wang, Kefan

doi:10.1016/j.solener.2020.04.079

Cited by 30 publications

(29 citation statements)

References 19 publications

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“…For example, Cs 2 SnI 6 powder synthesized in anhydrous ethanol exhibited superior air stability than acetone, acetonitrile, and isopropanol. [ 89 ] A similar trend was observed for the thermal stability test, which showed superior thermal stability of Cs 2 SnI 6 powder synthesized in anhydrous ethanol, as shown in Figure 7f. However, all the solvents exhibited prominent impurity peaks at 200 °C, which can be attributed to the low stability of solution‐processed Cs 2 SnI 6 .…”

Section: Stability Of Cs2sni6supporting

confidence: 77%

Section: Fabrication Strategies and Their Impact On The Properties Of Cs2sni6mentioning

confidence: 99%

“…Nairui et al [ 89 ] reported a simple one‐step solution process to prepare Cs 2 SnI 6 powder and investigated the impact of reaction ratio, reactant type, and solvent type on the properties of Cs 2 SnI 6 . They found out that using acetonitrile or anhydrous ethanol, with a CsI:SnI 4 ratio of 3:2 (or 2:1) or with a CsI:SnI 2 ratio of 1:1, can form pure and crystalline Cs 2 SnI 6 powder with higher carrier mobility and improved stability.…”

Section: Fabrication Strategies and Their Impact On The Properties Of Cs2sni6mentioning

confidence: 99%

“…Reproduced with permission. [ 89 ] Copyright 2020, Elsevier Ltd. g) Air stability tests of Cs 2 SnI 6 films prepared by the two‐step dry process. h) Structural and morphological analysis of Cs 2 SnI 6 powder under ambient exposure.…”

Section: Stability Of Cs2sni6mentioning

confidence: 99%

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Lead‐Free Cs₂SnI₆ Perovskites for Optoelectronic Applications: Recent Developments and Perspectives

et al. 2021

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Since the booming research on perovskite solar cells (PSCs), organic–inorganic hybrid halide perovskites have triggered widespread research attention. This is seen in the unprecedented improvement of the power conversion efficiency (PCE) from an initial 3.8% to a remarkable 25.5%. Despite the fascinating improvement in PCEs, the toxicity of the detrimental lead element is a major limiting factor that hampers the commercialization prospect of lead‐based materials. Extensive efforts have been dedicated to the progress of lead‐free, stable, and ecofriendly perovskite materials for green‐energy applications. Recently, double‐halide Cs2SnI6 perovskite emerged as a star material due to its favorable optoelectronic properties, stable nature, and environmental friendliness. Thus, an in‐time review to recapitulate the recent advances of Cs2SnI6 is critical to provide viable theoretical and experimental strategies for synergic optimization of perovskite films. Herein, the theoretical and experimental understandings of the properties of Cs2SnI6 are summarized and the different fabrication methodologies and their influences on the properties of Cs2SnI6 are discussed. The application potential of Cs2SnI6 is further reviewed and the limiting factors that influence the performance of Cs2SnI6 devices are highlighted. In the end, prospective research directions to improve the optoelectronic properties are presented for developing efficient Cs2SnI6 devices.

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Section: Stability Of Cs2sni6supporting

confidence: 77%

Section: Fabrication Strategies and Their Impact On The Properties Of Cs2sni6mentioning

confidence: 99%

Section: Fabrication Strategies and Their Impact On The Properties Of Cs2sni6mentioning

confidence: 99%

Section: Stability Of Cs2sni6mentioning

confidence: 99%

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Lead‐Free Cs₂SnI₆ Perovskites for Optoelectronic Applications: Recent Developments and Perspectives

et al. 2021

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“…[ 27–29,31 ] A peak corresponding to the (011) lattice plane of CsI was also observed, confirming the decomposition and oxidation mechanisms as reported previously. [ 27,28,32–35 ] It was reported that there are two chemical reactions involved: CsSnI 3 → CsI + SnI 2 and 2CsI + 2SnI 2 + O 2 → Cs 2 SnI 6 + SnO 2 . [ 27 ] The overall reaction is 2CsSnI 3 + O 2 → Cs 2 SnI 6 + SnO 2 .…”

Section: Resultsmentioning

confidence: 99%

The Influence of Spontaneous Oxidative Conversion on the Characteristics of Lead‐Free Halide Perovskite CsSn(I_xBr₁₋_x)₃ and on the Performance of Perovskite Light‐Emitting Diodes

Hong

Chiu

et al. 2021

Adv Materials Inter

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In this study, lead‐free perovskite CsSn(IxBr1−x)3 films with photoluminescence emission wavelengths from 677 to 887 nm are prepared. The influence of air exposure on their characteristics is also investigated. It is found that CsSnI3 can be transformed to Cs2SnI6 upon increasing the air exposure time. The decomposition and oxidation mechanisms are confirmed by the X‐ray diffraction pattern due to the presence of CsI peak. It is observed that devices based on the CsSn(IxBr1−x)3 film with increased Br− ratio and the CsSnI3 film with prolonged air exposure time show inferior performance. These results are mainly attributed to the highest occupied molecular orbital levels of CsSn(IxBr1−x)3 and Cs2SnI6. Defect density of state and binding energy of these materials are also investigated and reported in this study.

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All‐Inorganic Perovskite Photovoltaics

Jena

Guo

Miyasaka

2021

Perovskite Photovoltaics and Optoelectronics

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One-step solution synthesis and stability study of inorganic perovskite semiconductor Cs2SnI6

Cited by 30 publications

References 19 publications

Lead‐Free Cs₂SnI₆ Perovskites for Optoelectronic Applications: Recent Developments and Perspectives

Lead‐Free Cs₂SnI₆ Perovskites for Optoelectronic Applications: Recent Developments and Perspectives

The Influence of Spontaneous Oxidative Conversion on the Characteristics of Lead‐Free Halide Perovskite CsSn(I_xBr₁₋_x)₃ and on the Performance of Perovskite Light‐Emitting Diodes

All‐Inorganic Perovskite Photovoltaics

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One-step solution synthesis and stability study of inorganic perovskite semiconductor Cs2SnI6

Cited by 30 publications

References 19 publications

Lead‐Free Cs2SnI6 Perovskites for Optoelectronic Applications: Recent Developments and Perspectives

Lead‐Free Cs2SnI6 Perovskites for Optoelectronic Applications: Recent Developments and Perspectives

The Influence of Spontaneous Oxidative Conversion on the Characteristics of Lead‐Free Halide Perovskite CsSn(IxBr1−x)3 and on the Performance of Perovskite Light‐Emitting Diodes

All‐Inorganic Perovskite Photovoltaics

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Product

Resources

About

Lead‐Free Cs₂SnI₆ Perovskites for Optoelectronic Applications: Recent Developments and Perspectives

Lead‐Free Cs₂SnI₆ Perovskites for Optoelectronic Applications: Recent Developments and Perspectives

The Influence of Spontaneous Oxidative Conversion on the Characteristics of Lead‐Free Halide Perovskite CsSn(I_xBr₁₋_x)₃ and on the Performance of Perovskite Light‐Emitting Diodes