메인메뉴바로가기

한양대학교 산학협력단

홈으로 바로가기 > 연구정보 > 연구성과 > 금주의 우수논문

연구성과 > 금주의 우수논문

페이스북 로그인트위터 로그인카카오톡 로그인메일 전송
view

SCI Article

Surface Modification of CdSe Quantum-Dot Floating Gates for Advancing Light-Erasable Organic Field-E
성명 장재영()
소속 공과대학 에너지공학과
캠퍼스
우수선정주 2018년 10월 2째주
Author Jeong, Yong Jin (Res Inst Ind Sci); Jeong, Yong Jin (Dept Energy Engn); Noh, Sung Hoon (Dept Energy Engn); 장재영 (Dept Energy Engn);
Corresponding Author Info Jang, J (reprint author), Hanyang Univ, Dept Energy Engn, Seoul 04763, South Korea.
E-mail 이메일 아이콘jyjang15@hanyang.ac.kr
Document Type Article
Source ACS NANO Volume:12 Issue:8 Pages:7701-7709 Published:2018
Times Cited 0
External Information http://dx.doi.org/10.1021/acsnano.8b01413
Abstract Photoresponsive transistor memories that can be erased using light-only bias are of significant interest owing to their convenient elimination of stored data for information delivery. Herein, we suggest a strategy to improve light-erasable organic transistor memories, which enables fast "photoinduced recovery" under low-intensity light. CdSe quantum dots (QDs) whose surfaces are covered with three different organic molecules are introduced as photoactive floating-gate interlayers in organic transistor memories. We determine that CdSe QDs capped or surface-modified with small molecular ligands lead to efficient hole diffusion from the QDs to the conducting channel during "photoinduced recovery", resulting in faster erasing times. In particular, the memories with QDs surface-modified with fluorinated molecules function as normally-ON type transistor memories with nondestructive operation. These memories exhibit high memory ratios over 10(5) between OFF and ON bistable current states for over 10 000 s and good dynamic switching behavior with voltage-driven programming processes and light-assisted erasing processes within 1 s. Our study provides a useful guideline for designing photoactive floating-gate materials to achieve desirable properties of light-erasable organic transistor memories.
Web of Science Categories Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
Funding Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2018R1D1A1A02050420]
Language English
페이스북 로그인트위터 로그인카카오톡 로그인메일 전송 리스트