PbS-Based Quantum Dot Solar Cells with Engineered π-Conjugated Polymers Achieve 13% Efficiency
- Title
- PbS-Based Quantum Dot Solar Cells with Engineered π-Conjugated Polymers Achieve 13% Efficiency
- Author
- 정인환
- Keywords
- External quantum efficiency; Extraction; Interfacial charge; Layers; Power conversion efficiency
- Issue Date
- 2020-10
- Publisher
- American Chemical Society
- Citation
- ACS ENERGY LETTERS, v. 5, no. 11, page. 3452-3460
- Abstract
- While hole extraction is crucial for the external quantum efficiency of conventional n-i-p colloidal quantum dot (CQD) solar cells (CQDSCs), sulfur-passivated p-type CQDs (pCQDs) have been the best hole-transport material (HTM) to date. In this work, we developed organic π-conjugated polymers (π-CPs) that can achieve substantially improved HTM performance compared with conventional pCQDs. A weakly electron-withdrawing triisopropylsilylethynyl (TIPS) group was employed with a weak donor moiety, benzo[1,2-b:4,5:b′]-dithiophene (BDT), in the push–pull structured π-CPs to optimize the optoelectronic properties of the HTM. The CQDSCs using TIPS-containing π-CPs achieved a PCE (13.03%) substantially higher than those previously reported using pCQD (11.33%) or π-CPs (11.25%) owing to the improved charge collection efficiency near the photoactive CQD layer/HTM interface. To the best of our knowledge, our CQDSCs using TIPS-based π-CPs achieved the highest reported PCE among SSE-free CQDSCs.
- URI
- https://pubs.acs.org/doi/full/10.1021/acsenergylett.0c01838https://repository.hanyang.ac.kr/handle/20.500.11754/171811
- ISSN
- 2380-8195
- DOI
- 10.1021/acsenergylett.0c01838
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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