Enhanced performance of perovskite solar cells by ultraviolet-ozone treatment of mesoporous TiO2
| Autor: | Jin Fang, Xinfeng Liu, Yong Yan, Yang Mi, Zengze Wang, Xiaoyang Zhu, He Ren |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Energy conversion efficiency General Physics and Astronomy Perovskite solar cell 02 engineering and technology Surfaces and Interfaces General Chemistry Substrate (electronics) 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics medicine.disease_cause 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Semiconductor medicine Optoelectronics 0210 nano-technology business Mesoporous material Current density Ultraviolet Perovskite (structure) |
| Zdroj: | Applied Surface Science. 436:596-602 |
| ISSN: | 0169-4332 |
| Popis: | The performance of a semiconductor electronic or photonic device depends greatly on the properties of the interface. In a typical perovskite solar cell (PSC), the interface between electron transport layer (ETL) and perovskites is found to significantly influence the power conversion efficiency (PCE). Herein, Ultraviolet-ozone (UVO) treatment, a technique commonly used to clean a device substrate, is applied on ETL, specially, mesoporous/compact TiO2 layer. This treatment increases the conductivity of ETL and removes the residual organics at the surface. Consequently, an improved interface between mesoporous TiO2 and perovskite is achieved to enhance the performance of PSC. For example, the fill factor (FF) increases by ∼13%, the short-circuit current density (Jsc) and open-circuit voltage (Voc) increase by ∼2%, and the PCE finally enhances by ∼20% with 15 min of UVO treatment. With this method, the PCE of the best cell reaches to 20.43% under the illumination of AM 1.5 (100 mW cm−2) simulated sunlight. |
| Databáze: | OpenAIRE |
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