Air stability of ZnO nanowire–PbS quantum dot heterojunction solar cells with dicarboxylate-bridged PbS colloidal quantum dot layer as a hole transport material
Abstract To improve air stability in PbS quantum dot solar cells, fumaric acid was used as a ligand for the hole transport layer. Unlike the widely used ethane-1,2-dithiol in high-efficiency solar cells, the diacid preserves similar energy levels while significantly enhancing hole mobility. The resulting solar cells exhibited comparable initial efficiency and superior air stability. This improvement is attributed to lower series and higher parallel resistances, which together contributed to more stable solar cell performance over time under ambient conditions.
Authors
- Koichi Tamaki (ORCID: https://orcid.org/0000-0002-7617-1266)
- Takaya Kubo (ORCID: https://orcid.org/0000-0001-6408-6972)
- Ryota Jono (ORCID: https://orcid.org/0000-0001-9098-854X)
- Naoyuki Shibayama (ORCID: https://orcid.org/0000-0003-2182-049X)
- Hiroshi Segawa (ORCID: https://orcid.org/0000-0001-8076-9722)
- Haibin Wang (ORCID: https://orcid.org/0000-0002-0826-7979)
- Xiaoxiao Mi (ORCID: https://orcid.org/0009-0007-4762-8697)
Institutions
- Eneos (Japan) (JP)
- Tokyo Metropolitan Komaba High School (JP)
- The University of Tokyo (JP)
- Toin University of Yokohama (JP)
Publication Details
- Journal
- Chemistry Letters
- Published
- 2025-07-01
- DOI
- https://doi.org/10.1093/chemle/upaf127
- Citations
- 1
- Primary Topic
- Quantum Dots Synthesis And Properties
- Type
- article
- Field-Weighted Citation Impact
- 0.52
Funders
- Ministry of Education, Culture, Sports, Science and Technology
- Ministry of Economy, Trade and Industry
- New Energy and Industrial Technology Development Organization
- China Scholarship Council