Photodetectors based on the composites consisting of ZnO nanorods, CdTe quantum dots and Au nanorods
碩士 === 國立臺灣大學 === 物理研究所 === 99 === In this thesis a new ultraviolet (UV) photodetectors based on the composites consisting of ZnO nanorods, CdTe quantum dots and Au nanorods are fabricated and studied. The photodetectors were fabricated with a novel way by shorting the distance of electrodes to get...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | en_US |
| Published: |
2011
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/33902322347870828015 |
| Summary: | 碩士 === 國立臺灣大學 === 物理研究所 === 99 === In this thesis a new ultraviolet (UV) photodetectors based on the composites consisting of ZnO nanorods, CdTe quantum dots and Au nanorods are fabricated and studied. The photodetectors were fabricated with a novel way by shorting the distance of electrodes to get better photoresponsivity. An obvious enhancement of photocurrent had been observed after CdTe quantum dots and Au nanorods deposited on the ZnO nanorods. The mechanism can be attributed to the type II band alignment between ZnO and CdTe. Additional Au nanorods deposited on the photodetectors can be used to intensify the absorbance of CdTe under 514-nm wavelength light. Considering the spectrum of photoresponse about ZnO and CdTe, this photodetectors show high efficiency and wide-range response.
|
|---|