Quasi-solid dye-sensitized solar cells integrated with nanomaterials blending gel electrolyte & the optimized process for perovskite solar cell system under atmosphere

• Main Authors: Chia-Hung Chen, 陳佳宏
• Other Authors: Jia-Yaw Chang
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/60982847222517530754

碩士 === 國立臺灣科技大學 === 化學工程系 === 104 === The first part of this study involves stable qusi-solid state dye synthesized solar cell (QS-DSSC). Polymer gel electrolyte was fabricated by using ionic liquids and a diamine derivative as low molecular mass organogelators (LMOGs). Furthermore, the influence of different nanoparticles such as SiO2, TiO2 and GO to polymer gel electrolyte electrolytes were investigated. In optimizing the photoelectric conversion efficiency of the DSSC with the polymer gel electrolyte is up to 7.21%, which is close to the conversion efficiency of the ionic liquid electrolyte 7.22%. Consequently, the photovoltaic performances of DSSCs based on nano-TiO2 nanocomposite polymer electrolyte gelators are much better than those only polymer gelators. Remarkably, the results of the J-V measurement show a champion of 7.79% power conversion efficiency with NCPE-T. Significantly on successive heating and light soaking stability tests the polymer gel electrolyte and nanocomposite polymer gel electrolyte maintains more than 90% of the original photoelectric conversion efficiency after 10 days, whereas the ionic liquid electrolyte drops to 50%. Intensity modulated photocurrent/photovoltage spectroscopy and electrochemical impedance spectra were conducted to study the kinetic process of electron transport and recombination behavior. The second part is the use of two-step spin-coating method to establish a perovskite solar cell under the atmosphere. With optimizing m-TiO2, PbI2, MAI and HTM layer thickness, the photoelectric conversion efficiency dramatically increase from 0.25% to 8.88%.