High-Performance Perovskite Solar Cells with a Weak Covalent TiO2:Eu3+ Mesoporous Structure
| Autor: | Linhua Hu, Changneng Zhang, Ling Jiang, Songyuan Dai, Ahmed Alsaedi, Yang Huang, Tasawar Hayat, Jiawei Zheng, Wangchao Chen |
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| Rok vydání: | 2017 |
| Předmět: |
Chemical substance
Materials science Photoluminescence business.industry Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ion Amorphous solid Nanocrystal Chemical engineering Covalent bond Materials Chemistry Electrochemistry Chemical Engineering (miscellaneous) Optoelectronics Electrical and Electronic Engineering 0210 nano-technology business Mesoporous material Perovskite (structure) |
| Zdroj: | ACS Applied Energy Materials. 1:93-102 |
| ISSN: | 2574-0962 |
| DOI: | 10.1021/acsaem.7b00008 |
| Popis: | Mesoporous TiO2 nanocrystals with attached Eu3+ ions in an amorphous state are employed as structures for highly efficient perovskite solar cells. The down-conversion TiO2:Eu3+ nanocrystal shows a good photoluminescence characteristic to convert the incident high-energy photon into a lower-energy photon, which improves the UV light utilization capability of perovskite solar cells (PSCs). The device within 1.0 wt % Eu3+ ions shows an improvement of 29.2% from 12.22% to 15.79% in PCE compared with the typical devices without Eu3+ in TiO2, which is attributed to the increased utilization of incident UV light and the dramatically suppressed electron recombination process. To summarize, the combination of a high UV light-harvesting capability and a slow electron recombination process with TiO2:Eu3+ mesoporous structure could successfully develop more efficient and stable PSCs. |
| Databáze: | OpenAIRE |
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