닫기

연구

Research Outcome

미래를 창조하는 포스텍 화학공학과

Design Strategy of Quantum Dot Thin-Film Solar Cells

Title of paper
Design Strategy of Quantum Dot Thin-Film Solar Cells
Author
[박태호교수 연구실] 양자점 태양전지 설계 전략 리뷰
Publication in journal
Small 2020, 16, 2002460
Publication date
20201020

 

[Abstract]
 
Quantum dots (QDs) are emerging photovoltaic materials that display exclusive characteristics that can be adjusted through modification of their size and surface chemistry. However, designing a QD‐based optoelectronic device requires specialized approaches compared with designing conventional bulk‐based solar cells. In this paper, design considerations for QD thin‐film solar cells are introduced from two different viewpoints: optics and electrics. The confined energy level of QDs contributes to the adjustment of their band alignment, enabling their absorption characteristics to be adapted to a specific device purpose. However, the materials selected for this energy adjustment can increase the light loss induced by interface reflection. Thus, management of the light path is important for optical QD solar cell design, whereas surface modification is a crucial issue for the electrical design of QD solar cells. QD thin‐film solar cell architectures are fabricated as a heterojunction today, and ligand exchange provides suitable doping states and enhanced carrier transfer for the junction. Lastly, the stability issues and methods on QD thin‐film solar cells are surveyed. Through these strategies, a QD solar cell study can provide valuable insights for future‐oriented solar cell technology.


DOI: 10.1002/smll.202002460
Link: https://onlinelibrary.wiley.com/doi/10.1002/smll.202002460