Co/Eu co-doped electron transport layer enhances charge extraction and light absorption for efficient carbon-based HTM-free perovskite solar cells
Zhenyun Zhang
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Search for more papers by this authorFazheng Qiu
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Search for more papers by this authorTao Shen
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Search for more papers by this authorLei Xu
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Search for more papers by this authorCorresponding Author
Jingyuan Ma
College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang, China
Correspondence
Junjie Qi, School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China.
Email: [email protected]
Jingyuan Ma, College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang, 050024, China.
Email: [email protected]
Search for more papers by this authorCorresponding Author
Junjie Qi
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Correspondence
Junjie Qi, School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China.
Email: [email protected]
Jingyuan Ma, College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang, 050024, China.
Email: [email protected]
Search for more papers by this authorZhenyun Zhang
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Search for more papers by this authorFazheng Qiu
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Search for more papers by this authorTao Shen
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Search for more papers by this authorLei Xu
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Search for more papers by this authorCorresponding Author
Jingyuan Ma
College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang, China
Correspondence
Junjie Qi, School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China.
Email: [email protected]
Jingyuan Ma, College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang, 050024, China.
Email: [email protected]
Search for more papers by this authorCorresponding Author
Junjie Qi
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
Correspondence
Junjie Qi, School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083, China.
Email: [email protected]
Jingyuan Ma, College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang, 050024, China.
Email: [email protected]
Search for more papers by this authorFunding information: Beijing Natural Science Foundation, Grant/Award Number: 2202030; National Foundation of China, Grant/Award Number: 41422050303; Program of Introducing Talents of Discipline to Universities, Grant/Award Number: B14003; Fundamental Research Funds for Central Universities, Grant/Award Number: FRF-GF-19-001A, FRF-GF-19-002B
Summary
Carbon-based hole-transport materials (HTM)-free perovskite solar cells (C-PSCs) have received increasing attention in photovoltaic fields thanks to the low priced and superior stability. Nevertheless, the C-PSCs still suffer from low power conversion efficiencies (PCEs) in comparison with conventional PSCs. Here, we report a bimetal Co/Eu co-doping strategy to modify the electron transportation layer (ETL), simultaneously improving the charge extraction and light absorption and thus the performance of HTM-free C-PSCs. Systematic experiments suggest that (i) Co doping passivates the electronic trap-states in TiO2 ETL, improving the charge transport properties; (ii) Eu doping enhances the photoresponse of PSCs. Combining them together in ETL, all the photovoltaic parameters of C-PSCs are appreciably enhanced, leading to a PCE leap from 11.12 to 14.06% while keeping a superior device stability. These results may provide possibilities for the exploration of high-efficiency C-PSCs by further optimizing ETL with suitable doping.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Supporting Information
| Filename | Description |
|---|---|
| er6137-sup-0001-supinfo.docxWord 2007 document , 1.2 MB | Data S1. Supporting Information. |
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