| Summary: | 碩士 === 長庚大學 === 光電工程研究所 === 105 === The recent discovery of organic-inorganic perovskites offers promising routes for the development of low-cost, solar-based clean global energy solutions for the future. Thin-film solar cells are an important technology, promising cost-competitive solar power via reduced material and fabrication costs as compared to the established crystalline silicon photovoltaics. Such systems make use of the high absorption of photons.
Organic–inorganic hybrid solar cells that combine a mesoporous scaffold, a perovskite light absorber and an organic hole transporter have emerged at the forefront of solution-processable photovoltaic devices. However, they require processing temperatures of up to 500 °C to sinter the mesoporous metal-oxide support. Here, We used different powder and solution spin coating on ITO or FTO glass substrate to observe different film-forming characteristics. We demonstrated two low-temperature processes that can be stable with more than 10% conversion efficiency. In additim we used dimethylsulfoxide (DMSO) instead of the commonly used N,N-dimethylmethanamide (DMF) to dissolve PbI2 and to fabricate PbI2 films. This strategy overcomes the problem of incomplete conversion and uncontrolled particle sizes of perovskite in the absence of mesoporous scaffolds, greatly increasing the film reproducibility.
|
|---|
