Enhancing Efficiency and Stability of Perovskite Solar Cells through Interface Treatment Using an Interface Dipole Layer
- 주제(키워드) Perovskite solar cell , Interface dipole layer , Quinoxaline , Stability , Anti-corrosion
- 주제(DDC) 547
- 발행기관 아주대학교 일반대학원
- 지도교수 김종현
- 발행년도 2025
- 학위수여년월 2025. 2
- 학위명 석사
- 학과 및 전공 일반대학원 분자과학기술학과
- 실제URI http://www.dcollection.net/handler/ajou/000000034656
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Perovskite solar cells (PSCs) with an inverted p-i-n configuration have garnered considerable attention in photovoltaic research due to their notable scalability and efficiency. However, challenges at the interface electron transport layer (ETL)/cathode, including energy level mismatch, halide ion migration, and metal degradation, limit performance and stability. In this study, we introduce (4-(2,3-bis(4-methoxyphenyl)quinoxalin-5- yl)phenyl)diphenylphosphine oxide (MQPPO) as a quinoxaline-based high-dipole material, as a novel cathode interlayer (CIL) for p-i-n PSCs. MQPPO improves energy level alignment, charge extraction, and interfacial stability through its strong dipole moment and hydrophobic properties. The superior performance of MQPPO-incorporated devices was reflected in their power conversion efficiency (PCE), recorded at 20.43% for 1SUN and 33.18% for indoor conditions (1,000 lux). Additionally, MQPPO demonstrated exceptional ambient stability under 1SUN (1,440 hours) and 1,000 lux (800 hours); MQPPO exhibited over 80% retention of its original efficiency. These findings establish MQPPO as an effective solution for high-performance and high-stability PSCs, advancing their potential for sustainable energy technologies.
more목차
1. Introduction 1
2. Experimental Section 3
3. Results and Discussion 8
4. Conclusion 29
5. References 30
