Photodetector Based on CsPbBr<sub>3</sub>/Cs<sub>4</sub>PbBr<sub>6</sub> Composite Nanocrystals with High Detectivity
High-quality, all-inorganic CsPbBr<sub>3</sub>/Cs<sub>4</sub>PbBr<sub>6</sub> composite perovskite nanocrystals (NCs) were obtained with all-solution-processing at room temperature, and a photodetector (PD) with high detectivity was realized based on CsPbBr<sub...
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| Autores principales: | , , , , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/24b2fce106ed46b3b132438d575c0d48 |
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| Sumario: | High-quality, all-inorganic CsPbBr<sub>3</sub>/Cs<sub>4</sub>PbBr<sub>6</sub> composite perovskite nanocrystals (NCs) were obtained with all-solution-processing at room temperature, and a photodetector (PD) with high detectivity was realized based on CsPbBr<sub>3</sub>/Cs<sub>4</sub>PbBr<sub>6</sub> NCs. The detectivity (<i>D*</i>) of the proposed PD is 4.24 × 10<sup>12</sup> Jones under 532 nm illumination, which is among the highest levels for PDs based on all-inorganic perovskite NCs. In addition, a high linear dynamic range (LDR) of 115 dB under 1 V bias was also realized. Furthermore, the underlying mechanism for the enhanced performance of the proposed PD was discussed. Our work might promote the preparation of high-performance PDs based on dual-phase all-inorganic perovskite nanocrystals. |
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