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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/53821

Title: 藻紅蛋白增強氧化銦鎵鋅光偵測器光響應效能之研究
Study on the Effects of Phycoerythrin to Enhance the Photoresponsibility of a-IGZO Photodetectors
Authors: Chan, Yi-Chieh
Contributors: NTOU:Institute of Optoelectronic Sciences
Keywords: 氧化銦鎵鋅;藻紅蛋白;光偵測器;光響應度
indium gallium zinc oxide (IGZO);phycoerythrin;photodetectors;photo-responsibility
Date: 2019
Issue Date: 2020-07-03T08:47:57Z
Abstract: 本論文研究覆蓋藻紅蛋白(Phycoerythrin)對於氧化銦鎵鋅(indium gallium zinc oxide, IGZO)薄膜半導體光偵測器效能之影響。藻紅蛋白吸收入射光所產生之電子或電洞被轉移到下方的氧化銦鎵鋅以增加其光電流。比較有照光和無照光條件下電流-電壓(I-V)關係的差異,發現照射不同波長的入射光,藻紅蛋白/氧化銦鎵鋅結構具有較佳之光電流和光響應(photo- responsibility)。添加藻紅蛋白結構在給定正向偏壓下,照射325 nm、405 nm、532 nm雷射,與未添加藻紅蛋白的結構相比,在照射325 nm和405 nm雷射下,其光響應度分別從0.023 A/W、0.039 A/W提升至0.390 A/W、0.710 A/W,可分別提升約17和18倍。照射532 nm雷射下,光響應度從原先8.36×10-6 A/W提升至0.0017 A/W。可得知在原氧化銦鎵鋅結構下只能吸收紫外光波段,但在覆蓋藻紅蛋白後可將元件之吸收範圍擴大至可見光波段。此外,使用去離子水去除藻紅蛋白後能夠恢復原結構之光電特性,展示出其紫外光至可見光波段偵測性能之可轉換性。本研究透過使用藻紅蛋白成功增強了氧化銦鎵鋅薄膜半導體光偵測器之效能和響應度。
This thesis study the effects of phycoerythrin on the performance of the indium gallium zinc oxide (IGZO) thin film semiconductor photodetector . The electrons or holes generated due to the absorption of incident light by phycoerythrin are transferred to the underlying gallium indium gallium zinc oxide to increase the photocurrent of the IGZO based photodetectors. It was found that the the phycoerythrin/indium gallium zinc oxide structure has larger photocurrent intensity and photoresponse. The phycoerythrin/IGZO structure was irradiated with a 325 nm, 405 nm, 532 nm laser at a bias voltage of 6 V. Compared to the structure without phycoerythrin, under irradiation with 325 nm and 405 nm lasers, the light response was increased from 0.023 A / W, 0.039 A/W to 0.390 A/ W, 0.710 A/W, respectively, by about 17 and 18 times. Under the 532 nm laser irradiation, the phycoerythrin/indium gallium zinc oxide structure showed additional optical responsivity of 8.36×10-6 A/W to 0.0017 A/W for the visible light. In the original indium gallium zinc oxide structure, it can only absorb the ultraviolet light band, but after capping the phycoerythrin, the absorption range of the photodetector can be expanded to the visible light band, and the DI water can be used to remove the phycoerythrin showing its switching ability in detection optical wavelengths. This study also showed that the performance and responsivity of IGZO thin film semiconductor photodetectors can be enhanced by capping phycoerythrin.
URI: http://ethesys.lib.ntou.edu.tw/cgi-bin/gs32/gsweb.cgi?o=dstdcdr&s=G0010688015.id
Appears in Collections:[光電科學研究所] 博碩士論文

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