Highly Diffusive Nonluminescent Carriers in Hybrid Phase Lead Triiodide Perovskite Nanowires
Crystal structural rearrangements unavoidably introduce defects into materials, where even these small changes in local lattice structure could arouse a prominent impact on the overall nature of crystals. Contrary to the traditional notion that defects obstruct carrier transport, herein, we report a promoted transport mechanism of nonluminescent carriers in single-crystalline CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> nanowires (1345.2 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup>, about a 14-fold improvement), enabled by the phase transition induced defects (PTIDs). Carriers captured by PTIDs evade both the radiative and non-radiative recombinations during the incomplete tetragonal-to-orthorhombic phase transition at low temperatures, forming a specific nonluminescent state that exhibits an efficient long-distance transport and thereby realize a prominent enhancement of photocurrent responsivity for photodetector applications. The findings provide broader insights into the carrier transport mechanism in perovskite semiconductors and have significant implications for their rational design for photoelectronic applications at varied operating temperatures.
Authors
- Guanxin Yao (ORCID: https://orcid.org/0000-0003-2800-5041)
- Yongfu Liang (ORCID: https://orcid.org/0000-0002-2111-7035)
- Qi Sun (ORCID: https://orcid.org/0000-0002-7092-0705)
- Shengye Jin (ORCID: https://orcid.org/0000-0003-2001-2212)
- Longwen Chen (ORCID: https://orcid.org/0000-0002-6837-4936)
- Wenming Tian (ORCID: https://orcid.org/0000-0003-0235-6652)
- Chunyi Zhao
- Zhou Lu (ORCID: https://orcid.org/0000-0001-8527-0381)
- Xianyi Zhang (ORCID: https://orcid.org/0000-0003-4850-0672)
- Yanfeng Yin (ORCID: https://orcid.org/0000-0002-5699-2526)
- Lingchen Meng (ORCID: https://orcid.org/0000-0002-5244-0046)
- Rumeng Shi
- Peng Xu (ORCID: https://orcid.org/0009-0001-4619-4053)
Institutions
- Dalian Institute of Chemical Physics (CN)
- Chinese Academy of Sciences (CN)
- State Key Laboratory of Molecular Reaction Dynamics
- Anhui Normal University (CN)
Publication Details
- Journal
- Angewandte Chemie International Edition
- Published
- 2024-08-21
- DOI
- https://doi.org/10.1002/anie.202411499
- Citations
- 3
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.63
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Liaoning Province
- Liaoning Revitalization Talents Program
- Dalian Institute of Chemical Physics
- Natural Science Foundation of Anhui Province
- University Natural Science Research Project of Anhui Province