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2026 Vol.14, Issue 1 Preview Page
Ligand Engineering in Perovskite Quantum Dot Solar Cells: Impact of A-Site Cation Composition

페로브스카이트 양자점 태양전지의 A-site 양이온 조성에 따른 리간드 제어 공정 특성 변화

Sang-Hak Lee1
,
Sung-Yeon Jang12*
이 상학1
,
장 성연12*
1School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea
2Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea
1에너지화학공학과, 울산과학기술원, 울산, 44919
2탄소중립대학원, 울산과학기술원, 울산, 44919
*Corresponding Author
31 March 2026. pp. 9-18
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Abstract

Perovskite quantum dots (PQDs) have attracted significant attention as promising photovoltaic materials due to their unique optoelectronic properties, defect tolerance, and facile solution processing. Since the first report of PQD solar cells in 2016 with 10.77% efficiency, rapid development has been achieved, with recent certified values exceeding 19%. A key factor in this development is the control of initial long-chain ligands that must be replaced or removed to enable efficient charge transport. Because ligand binding strength and exchange behavior differ depending on the A-site cation, tailored strategies have been developed for inorganic Cs-based, organic FA/MA-based, and mixed cation PQDs. These efforts have led to steady improvements in device efficiency and stability. This review highlights recent advances in ligand engineering with respect to A-site composition and discusses remaining challenges for high-performance, scalable PQD solar cells.

Keywords
Perovskite Quantum Dot
Photovoltaics
Ligand exchange process
Purification process
A-site cation alloying
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Information
  • Publisher :Korea Photovoltaic Society
  • Publisher(Ko) :한국태양광발전학회
  • Journal Title :Current Photovoltaic Research
  • Volume : 14
  • No :1
  • Pages :9-18
  • Received Date : 2025-09-13
  • Revised Date : 2025-10-23
  • Accepted Date : 2025-10-23
  • DOI :https://doi.org/10.21218/CPR.2026.14.1.009
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