期刊
IEEE ELECTRON DEVICE LETTERS
卷 34, 期 8, 页码 1023-1025出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2013.2269992
关键词
Nanowire (NW); photodetector (PD); triple-junction (TJ) solar cell; ZnO
This letter reports the fabrication of a ZnO nanowire (NW) ultraviolet (UV) metal-semiconductor photodetector (MS-PD) integrated with a GaInP/GaAs/Ge triple-junction (TJ) solar cell. The ZnO NW MS-PD can detect UV light <370 nm. The TJ solar cell transforms solar light to electrical power and provides a bias of 2.5 V to enhance the response of the detector. At this bias, the UV-to-visible (370 to 500 nm) rejection ratio of the ZnO NW MS-PD is similar to 218 and the measured responsivity is 3.39 x 10(-4) A/W. In addition, the dynamic response of the ZnO NW MS-PD under the UV light illumination of 370 nm is stable and reproducible with an ON/OFF current ratio of similar to 1000.
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