標題: WO3 Nanoparticles or Nanorods Incorporating Cs2CO3/PCBM Buffer Bilayer as Carriers Transporting Materials for Perovskite Solar Cells
作者: Chen, Chih-Ming
Lin, Zheng-Kun
Huang, Wei-Jie
Yang, Sheng-Hsiung
照明與能源光電研究所
Institute of Lighting and Energy Photonics
關鍵字: Tungsten trioxide;Perovskite solar cells;Hydrothermal;Buffer bilayer
公開日期: 18-Oct-2016
摘要: In this work, we demonstrate a novel carrier transporting combination made of tungsten trioxide (WO3) nanomaterials and Cs2CO3/PCBM buffer bilayer for the fabrication of perovskite solar cells (PSCs). Two different types of WO3, including nanoparticles and nanorods, were prepared by sol-gel process and hydrothermal method, respectively. Cs2CO3/PCBM buffer bilayer was inserted between WO3 and perovskite layers to improve charge transfer efficiency and formation of pinhole-free perovskite layer. Besides, the leakage current of the devices containing Cs2CO3/PCBM buffer bilayer was significantly suppressed. The optimized device based on WO3 nanoparticles and Cs2CO3/PCBM bilayer showed an open-circuit voltage of 0.84 V, a short-circuit current density of 20.40 mA/cm(2), a fill factor of 0.61, and a power conversion efficiency of 10.49 %, which were significantly higher than those of PSCs without Cs2CO3/PCBM buffer bilayer. The results revealed that the combination of WO3 nanomaterials and Cs2CO3/PCBM bilayer provides an effective solution for improving performances of PSCs.
URI: http://dx.doi.org/10.1186/s11671-016-1670-8
http://hdl.handle.net/11536/132627
ISSN: 1556-276X
DOI: 10.1186/s11671-016-1670-8
期刊: NANOSCALE RESEARCH LETTERS
Volume: 11
起始頁: 0
結束頁: 0
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