| Improvement in the stability of gamma-CsPbI3 nanowires enabled by lattice immobilization through the Pb-O anchor in SBA-15 | |
| Jia, Feng-Yan1; Sun, Ling-Dong1; Dong, Hao1; Huang, Ling1; Wang, Li-Gang1; Li, Lin-Dong1; Jung, Yuhyeon1; Zhou, Liang1; Yan, Chun-Hua1,2 | |
| 2020-12-07 | |
| Source Publication | Inorganic Chemistry Frontiers Impact Factor & Quartile |
| ISSN | 2052-1553 |
| Volume | 7Issue:23Pages:4572-4579 |
| Abstract | Inorganic black-phase CsPbI3 perovskites (cubic alpha, tetragonal beta and orthorhombic gamma) have attracted immense attention due to their superior optical and optoelectronic properties. However, the black phase is metastable and spontaneously transforms into a non-optically active yellow phase (orthorhombic delta) as the temperature drops to room temperature or even lower. This severely inhibits its practical applications under light and driving voltage, and at varying temperatures. Here, we report a novel method to improve the stability of gamma-CsPbI3 nanowires in a wide temperature range. With an ordered mesoporous silica SBA-15 template, the CsPbI3 nanowires are confined into the channels and crystalize in the delta phase, which can transform into the gamma phase under calcination at 623 K. Compared with the CsPbI3 obtained without SBA-15, these gamma-CsPbI3 nanowires are stable until 193 K, the lowest temperature record to date. The phase stability stems from the interfacial coordination of Pb and O, which acts as an "anchor" to suppress the distortion of the [PbI6](4-) octahedron for gamma-CsPbI3. Additionally, this protocol can be extended to mixed halide perovskites. The "anchor" in this work is also expected to shed light on intriguing studies on the phase stabilization of other functional materials. |
| DOI | 10.1039/d0qi01069c |
| Indexed By | SCIE |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[21590791][21771005][21425101][21931001] ; Ministry of Science and Technology of China[2017YFA0205101][2017YFA0205104] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Inorganic & Nuclear |
| WOS ID | WOS:000592314600017 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/441452 |
| Collection | 兰州大学 |
| Corresponding Author | Sun, Ling-Dong; Yan, Chun-Hua |
| Affiliation | 1.Peking Univ, Coll Chem & Mol Engn, PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Che, State Key Lab Rare Earth Mat Chem & Applicat,Beij, Beijing 100871, Peoples R China 2.Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Jia, Feng-Yan,Sun, Ling-Dong,Dong, Hao,et al. Improvement in the stability of gamma-CsPbI3 nanowires enabled by lattice immobilization through the Pb-O anchor in SBA-15[J]. Inorganic Chemistry Frontiers,2020,7(23):4572-4579. |
| APA | Jia, Feng-Yan.,Sun, Ling-Dong.,Dong, Hao.,Huang, Ling.,Wang, Li-Gang.,...&Yan, Chun-Hua.(2020).Improvement in the stability of gamma-CsPbI3 nanowires enabled by lattice immobilization through the Pb-O anchor in SBA-15.Inorganic Chemistry Frontiers,7(23),4572-4579. |
| MLA | Jia, Feng-Yan,et al."Improvement in the stability of gamma-CsPbI3 nanowires enabled by lattice immobilization through the Pb-O anchor in SBA-15".Inorganic Chemistry Frontiers 7.23(2020):4572-4579. |
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