期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 17, 页码 9660-9665出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202013541
关键词
block copolymers; electrochemical deposition; mesoporous semiconductors; self-assembly
资金
- JX Nippon Mining & Metals Corporation
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2020R1A6A3A03039037, 2020R1C1C1004459]
- Australian Research Council [DE200100238]
- Australian Research Council [DE200100238] Funding Source: Australian Research Council
- National Research Foundation of Korea [2020R1A6A3A03039037, 2020R1C1C1004459] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study presents a new synthesis route for mesoporous semiconductors through soft-template-assisted electrochemical deposition. The resulting films exhibit homogeneous distribution of mesopores and high sensitivity in photodetection, demonstrating the versatility and potential for applications in nanostructured semiconductors.
Here we report the soft-template-assisted electrochemical deposition of mesoporous semiconductors (CdSe and CdTe). The resulting mesoporous films are stoichiometrically equivalent and contain mesopores homogeneously distributed over the entire surface. To demonstrate the versatility of the method, two block copolymers with different molecular weights are used, yielding films with pores of either 9 or 18 nm diameter. As a proof of concept, the mesoporous CdSe film-based photodetectors show a high sensitivity of 204 mW(-1) cm(2) at 680 nm wavelength, which is at least two orders of magnitude more sensitive than the bulk counterpart. This work presents a new synthesis route for nanostructured semiconductors with optical band gaps active in the visible spectrum.
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