研究目的
To design a new type of dual-polarity response self-powered photodetector based on ZnO NWs/Sb2Se3 heterojunction for optical communication and filterless color discrimination.
研究成果
The dual-polarity response in the self-powered PD is a result of the competition between PV effect and PTE effect. The device shows potential applications in VLC systems and filterless color discrimination, offering a cost-effective and simplified alternative to traditional PDs in CSK systems.
研究不足
The responsivity of the self-powered PD is relatively low compared to some existing self-powered PDs. The actual response speed could be faster but is limited by the measurement system.
1：Experimental Design and Method Selection:
The study involves the fabrication of a ZnO NWs/Sb2Se3 film heterojunction photodetector array. The design rationale is based on integrating photovoltaic (PV) and photothermoelectric (PTE) effects in one device to achieve dual-polarity response.
2：Sample Selection and Data Sources:
Commercial ITO glass substrates were used, with Sb2Se3 film deposited by RF magnetron sputtering and ZnO NWs grown via hydrothermal method.
3：List of Experimental Equipment and Materials:
Equipment includes RF magnetron sputtering system, hydrothermal synthesis setup, SEM, AFM, UV-VIS-NIR spectrophotometer, and a system source meter. Materials include ITO glass, Sb2Se3, ZnO, and Ag.
4：Experimental Procedures and Operational Workflow:
The process involves cleaning ITO substrates, depositing Sb2Se3 film, annealing, depositing ZnO seeds, growing ZnO NWs, and fabricating the photodetector array with Ag electrodes.
5：Data Analysis Methods:
The responsivity and external quantum efficiency (EQE) were calculated from photocurrent measurements under different light wavelengths and intensities.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
