Fast Charge Extraction in Perovskite-Based Core-Shell Nanowires
| Autor: | Edward J. Kluender, Chad A. Mirkin, Michael J. Ashley |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Photoluminescence
Materials science business.industry Scanning electron microscope General Engineering Nanowire General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Casting 0104 chemical sciences Template Semiconductor Optoelectronics General Materials Science Charge carrier 0210 nano-technology business Perovskite (structure) |
| Zdroj: | ACS nano. 12(7) |
| ISSN: | 1936-086X |
| Popis: | Realizing nanostructured interfaces with precise architectural control enables one to access properties unattainable using bulk materials. In particular, a nanostructured interface (e.g., a core–shell nanowire) between two semiconductors leads to a short charge separation distance, such that photoexcited charge carriers can be more quickly and efficiently collected. While vapor-phase growth methods are used to synthesize uniform core–shell nanowire arrays of semiconductors such as Si and InP, more general strategies are required to produce related structures composed of a broader range of materials. Herein, we employ anodic aluminum oxide templates to synthesize CH3NH3PbI3 perovskite core–copper thiocyanate shell nanowire arrays employing a combination of electrodeposition and solution casting methods. Using scanning electron microscopy, powder X-ray diffraction, and time-resolved photoluminescence spectroscopy, we confirm the target structure and show that adopting a core–shell nanowire architecture acce... |
| Databáze: | OpenAIRE |
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