| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-디스플레이 |
| 제목 |
Photoresponsivity enhancement of ZnO1-xSx phototransistors |
| 초록 |
ZnO is usually used in oxide phototransistors due to its high mobility and availability to large scale devices. However, the photoresponsivity in the visible light region is low due to its wide band gap. Therefore, heterostructures with the smaller band gap materials such as quantum dots are used for improving visible range photoresponsivity. However, heterostructure has some problems such as an increase of off-current and a formation of interfacial trap, which leads to the poor performance of the phototransistors. In this study, the photoresponsivity depending on the sulfur-to-oxygen composition ratio, x, of the ZnO1-xSx single layer was observed. The photo-responsible range was widened to the visible light region due to the smaller band gap of the ZnO1-xSx. The larger photo-current implied the enhancement of the photoresponsivity. The interfacial chemical properties of the phototransistors were analyzed through X-ray photoelectron spectroscopy measurement. |
| 저자 |
유종훈1, 이우정1, 조대형1, 김우주1, 강성준2, 정용덕1
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| 소속 |
1한국전자통신(연), 2경희대 |
| 키워드 |
oxide phototransistor; ZnO1-xSx
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| E-Mail |
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