| Autor: |
Mingrui Luo, Jiaxun Song, Jialin Wang, Xingchen Pan, Hao Hong, Richard Nötzel |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
AIP Advances, Vol 12, Iss 11, Pp 115112-115112-6 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2158-3226 |
| DOI: |
10.1063/5.0127889 |
| Popis: |
An efficient, self-powered ultraviolet photoelectrochemical photodetector based on n-GaN/p-Cu2O core–shell nanowire p–n heterojunctions is demonstrated. The photocurrent under solar light is 2–3 times larger than that for GaN nanowires. The photocurrents under the solar light and the ultraviolet light fraction are comparable, 100 µA/cm2 photocurrent density. The photocurrent under the broad visible light part is about 3% of that under solar light. The responsivity and specific detectivity reach 961.5 µA/W and 5.35 × 109 Jones under ultraviolet light, respectively. The rise/fall times are 42/65 ms. This is understood by efficient photocarrier separation, hole collection, and transport in the near-surface GaN/Cu2O p–n heterojunction. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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