| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
미래소재: 휴먼 인터페이스 고분자 소재 및 소자 기술 |
| 제목 |
Enhancing NIR photoresponsivity of Flexible MoS2 Phototransistors combining Siloxane Encapsulated Upconversion Nanoparticle |
| 초록 |
We demonstrate NIR detectable MoS2 phototransistors, combining a siloxane encapsulated upconversion-nanoparticle (UCNP) wavelength converting layers and high visible photoresponse of MoS2 phototransistors. Monolayer of MoS2 with direct bandgap is promising semiconducting materials for UV-Visible photodetector (PD), but it has large bandgap for NIR detection. Lanthanide doped UCNPs are capable of converting NIR excitation into visible so that high visible response MoS2 PD can be transformed NIR PDs using wavelength converting layers. The oleic acid capped UCNPs and highly condensed siloxane materials with thiol functional groups and methacrylate were radically polymerized and cross-linked via thiol-ene reaction. We demonstrate green emitting siloxane encapsulated UCNP layers under NIR illumination and coupled it MoS2 phototransistors to enhanced its NIR photoresponsivity. We envisage the potential of siloxane encapsulated UCNPs as functional platform for future bio-integrated devices. |
| 저자 |
이인준1, 강민수2, 김태수1, 강기범1, 이원령3, 배병수1
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| 소속 |
1한국과학기술원, 2KAIST, 3한국과학기술(연) |
| 키워드 |
Near-infrared; Transition metal dichalcogenide; upconversion nanoparticle; siloxane; phototransistor
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| E-Mail |
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