메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

논문 기본 정보

자료유형
학술저널
저자정보
신광용 (경상국립대학교) 윤동환 (경상국립대학교) 하영우 (경상국립대학교) 정윤혜 (경상국립대학교) 조영채 (경상국립대학교(Department of Materials Engineering and Convergence Technology)) 백승민 (경상국립대학교(Department of Materials Engineering and Convergence Technology)) 신혜선 (경상국립대학교(Department of Materials Engineering and Convergence Technology)) Vivek Vishal Sharma (Research Institute for Green Energy Convergence Technology) 김기환 (경상국립대학교)
저널정보
한국전기전자재료학회 Transactions on Electrical and Electronic Materials Transactions on Electrical and Electronic Materials Vol.25 No.1
발행연도
2024.2
수록면
40 - 47 (8page)
DOI
https://doi.org/10.1007/s42341-023-00499-9

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) stands as a prominent hole transport layer (HTL) in perovskite light-emitting diodes (LEDs), known for its remarkable electrical conductivity and light transmittance. However, its electron-blocking properties have shown limitations in achieving optimal charge balance by allowing excessive electron transport. To overcome this challenge, we introduce poly(triarylamine) (PTAA) as an intermediate HTL material between the PEDOT:PSS layer and the perovskite emission layer. By leveraging PTAA's higher lowest unoccupied molecular orbital (LUMO) level of 1.8 eV compared to PEDOT:PSS, a substantial energy barrier is established. This energy barrier effectively traps electrons within the emission layer, elevating radiative recombination rates and consequently enhancing overall efficiency. The notable LUMO energy gap of approximately 1.7 eV between PTAA and CsPbBr 3 further contributes to efficient electron confinement. To optimize hole injection and promote charge balance, we address the highest occupied molecular orbital (HOMO) level mismatch between PEDOT:PSS and PTAA. This is achieved by incorporating perfluorinated ionomer (PFI) into PEDOT:PSS, inducing a band bending effect. The resulting energy level alignment leads to improved device performance. Experimental validation of this energy level engineering strategy in light-emitting diodes (LEDs) demonstrates substantial enhancements. The external quantum efficiency (EQE) achieves a remarkable 2.8-fold increase, advancing from 1.07% to 2.81%, when compared to devices employing PEDOT:PSS alone. Moreover, the current effi ciency (CE) experiences a 2.5-fold augmentation, surging from 3.74 cd/A to 9.35 cd/A. The luminance levels soar by an impressive 11.3-fold, ascending from 1,745 cd/m2 to an impressive 19,780 cd/m2 .

목차

등록된 정보가 없습니다.

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

최근 본 자료

전체보기

댓글(0)

0