SiO2/TiO2based hollow nanostructures as scaffold layers and Al-doping in the electron transfer layer for efficient perovskite solar cells
| Autor: | Jyongsik Jang, Juyoung Yun, Haejun Yu, Jaehoon Ryu, Jungsup Lee |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Working electrode
Materials science Nanostructure Renewable Energy Sustainability and the Environment business.industry Open-circuit voltage Doping Energy conversion efficiency Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electron transfer Optoelectronics General Materials Science 0210 nano-technology business Layer (electronics) Perovskite (structure) |
| Zdroj: | Journal of Materials Chemistry A. 4:1306-1311 |
| ISSN: | 2050-7496 2050-7488 |
| Popis: | Perovskite solar cells (PSCs) have been developed intensively recently due to their excellent efficiency. In this study, PSCs were fabricated using a hollow structure as a scaffold layer and Al doped TiO2 (Al-TiO2) as a compact layer. The hollow structure showed effective loading of perovskite (CH3NH3PbI3Cl3−x) on the working electrode of the PSCs. In particular, using SiO2/TiO2 hollow nanoparticles (STHNPs) instead of TiO2 hollow nanoparticles (THNPs) as insulators improved the open circuit voltage, because STHNPs did not allow photogenerated electrons to transfer easily from the perovskite. Al-TiO2 compact layers synthesized using a low temperature procedure (≤150 °C) promoted electron extraction and reduced the recombination, leading to enhanced power conversion efficiency (PCE). An optimum PCE of 14.7% was achieved for PSCs based on STHNP scaffold layers with Al doping in the electron transfer layer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|