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Journal article
Performance improvement of MXene-based perovskite solar cells upon property transition from metallic to semiconductive by oxidation of Ti3C2Tx in air
Journal of materials chemistry. A, Materials for energy and sustainability, v 9(8), pp 5016-5025
01 Jan 2021
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The unique properties of MXenes that arise from terminating functional groups and oxidation of MXenes make them attractive for application in photovoltaic devices like perovskite solar cells (PSCs). Here, oxidation of Ti3C2Tx hydrocolloid was carried out to tune its properties desirable for an electron transport layer (ETL) in low-temperature processed PSCs. The calculations of the energy levels were carried out using the Vienna ab initio simulation package (VASP) code based on density functional theory (DFT). Oxidation of Ti3C2Tx can generate Ti-O bonds and effectively reduce the macroscopic defects of the film fabricated by spin-coating, while a transition from metallic material to semiconductor occurred after heavy oxidation. A better matching of energy levels between perovskite and ETL layer in the case of a hybrid of oxidized and pristine Ti3C2Tx renders a champion power conversion efficiency (PCE) of 18.29%. The improvement in PCE can be attributed to the increased electron mobility in the ETL, which promotes electron transport and reduces the electron-hole recombination. Hence, by presenting a simple method for high performance in PSCs by MXene-derived materials, this work demonstrates the great potential of these materials for applications in low-temperature processed PSCs and other photovoltaic technologies.
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Details
- Title
- Performance improvement of MXene-based perovskite solar cells upon property transition from metallic to semiconductive by oxidation of Ti3C2Tx in air
- Creators
- Lin Yang - Jilin Univ, Coll Phys, Minist Educ, Key Lab Phys & Technol Adv Batteries, 2699 Qianjin St, Changchun 130012, Peoples R ChinaDongxiao Kan - Jilin Univ, Coll Phys, Minist Educ, Key Lab Phys & Technol Adv Batteries, 2699 Qianjin St, Changchun 130012, Peoples R ChinaChunxiang Dall'Agnese - Jilin Univ, Coll Phys, Minist Educ, Key Lab Phys & Technol Adv Batteries, 2699 Qianjin St, Changchun 130012, Peoples R ChinaYohan Dall'Agnese - UCL, Inst Mat Discovery, London WC1E 7JE, EnglandBaoning Wang - Jilin Univ, Coll Phys, Minist Educ, Key Lab Phys & Technol Adv Batteries, 2699 Qianjin St, Changchun 130012, Peoples R ChinaAjay Kumar Jena - Toin University of YokohamaYingjin Wei - Jilin Univ, Coll Phys, Minist Educ, Key Lab Phys & Technol Adv Batteries, 2699 Qianjin St, Changchun 130012, Peoples R ChinaGang Chen - Jilin UniversityXiao-Feng Wang - Jilin Univ, Coll Phys, Minist Educ, Key Lab Phys & Technol Adv Batteries, 2699 Qianjin St, Changchun 130012, Peoples R ChinaYury Gogotsi - Drexel University, Materials Science and EngineeringTsutomu Miyasaka - Toin University of Yokohama
- Publication Details
- Journal of materials chemistry. A, Materials for energy and sustainability, v 9(8), pp 5016-5025
- Publisher
- Royal Soc Chemistry
- Number of pages
- 10
- Grant note
- Fundamental Research Funds for the Central Universities 11974129 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000624755900046
- Scopus ID
- 2-s2.0-85101960526
- Other Identifier
- 991014969881404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Energy & Fuels
- Materials Science, Multidisciplinary