Journal article
Organic Solvent Dispersible MXene Integrated Colloidal Quantum Dot Photovoltaics
Advanced energy materials
26 Jul 2023
Abstract
Despite recent advances in colloidal quantum dot (CQD) photovoltaics, several challenges persist and hinder further improvements. In particular, the Fermi level mismatch between the iodide-treated photoactive and thiol-treated hole-transporting CQD layers creates an unfavorable energy band for hole collection. Furthermore, the numerous surface cracks in the thiol-treated CQD layer facilitate direct contact between the photoactive CQD layer and the metal electrode, consequently leading to reduced device performance. To address these issues, a polycatechol functionalized MXene (PCA-MXene) that can serve both as a dopant and an interlayer for CQD photovoltaics is developed. By achieving a uniformly dispersed mixture in a butylamine solvent, PCA-MXene enables the effective combination of MXene and CQDs. This results in the modification of the work function of CQDs and the modulation of the energy band alignment, ultimately promoting enhanced hole extraction. Moreover, the PCA-MXene employed as an interlayer effectively covers the surface cracks present in the thiol-treated CQD layer. This coverage inhibits both metal electrode penetration and moisture intrusion into the device. Owing to these advantages, the CQD photovoltaics incorporating PCA-MXene achieve a power conversion efficiency (PCE) of 13.6%, accompanied by enhanced thermal stability, in comparison to the reference device with a PCE of 12.8%.
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Details
- Title
- Organic Solvent Dispersible MXene Integrated Colloidal Quantum Dot Photovoltaics
- Creators
- Hyung Ryul You - Daegu Gyeongbuk Institute of Science and TechnologySeongeun Lee - Korea Institute of Science and TechnologyDuck Hoon Lee - Daegu Gyeongbuk Institute of Science and TechnologyG. Murali - Korea National University of TransportationArun S. Nissimagoudar - Indo Korea Science and TechnologyYounghoon Kim - Kookmin UniversitySeongmin Park - Korea National University of TransportationJihoon Lee - ConvergenceSeon Joon Kim - Korea Institute of Science and TechnologyJin Young Park - Daegu Gyeongbuk Institute of Science and TechnologyByung Joon Moon - Korea Institute of Science and TechnologyYoung Ho Park - Korea National University of TransportationSoo-Kwan Kim - Daegu Gyeongbuk Institute of Science and TechnologyHan Na Yu - Gyeongbuk Inst Sci & Technol DGIST, Dept Energy Sci & Engn, Daegu 42988, South KoreaHae Jeong Kim - Daegu Gyeongbuk Institute of Science and TechnologyWonjong Lee - Chungnam National UniversityGayoung Ham - ConvergenceHyeonji Lee - Korea National University of TransportationSeung-Cheol Lee - Indo Korea Science and TechnologyHyojung Cha - Kyungpook National UniversityJongchul Lim - Chungnam National UniversityYury Gogotsi - Drexel UniversityTae kyu An - Korea National University of TransportationInsik In - Korea National University of TransportationJongmin Choi - Daegu Gyeongbuk Institute of Science and Technology
- Publication Details
- Advanced energy materials
- Publisher
- Wiley
- Number of pages
- 11
- Grant note
- 2018R1A6A1A03023788; 2021R1I1A1A01055790 / Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education; National Research Foundation of Korea; Ministry of Education (MOE), Republic of Korea; National Research Council for Economics, Humanities & Social Sciences, Republic of Korea 21-CoE-ET-01; 23-HRHR-07 / DGIST Ramp;D Program of the Ministry of Science and ICT 2022M3J7A1062940 / National Research Foundation of Korea (NRF) - Korean government (MSIT); National Research Foundation of Korea; Ministry of Science & ICT (MSIT), Republic of Korea
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:001036340700001
- Scopus ID
- 2-s2.0-85165884625
- Other Identifier
- 991020927774604721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Energy & Fuels
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter