| Summary: | 碩士 === 國立臺北科技大學 === 光電工程系 === 106 === The dissertation discusses the fabrication of QDs of perovskite CsPbI3 by adding various concentrations of TBAI compounds to the synthesis to convert CsPbBr3 to CsPbI3 through ion exchange. However, it was also found that this change was observed at the same wavelength. The light source can excite different light emission wavelengths after excitation, and red shift from the original green light band to the red light wave band. In order to further optimize the quantum dot solution, the addition of a modified ligand oleic acid (OA) was chosen to achieve longer emission wavelengths.Since in the future the process is intended to be applied to the device, the properties of the quantum dot on the thin film will be further explored, and it will be spin-coated on the ITO glass for observation. For solar cell applications, all-inorganic hybrid perovskite solar cells are used in this paper. In this paper, I use the structure of glass / ITO / PEDOT: PSS / QD-CsPbI3 / TPBI / Ag for solar cell fabrication. PEDOT : PSS, QD-CsPbI3, and TPBI are the hole transport layer, active layer, and electron transport layer, respectively.
In order to understand the material properties of perovskite CsPbI3 quantum dots, field emission scanning electron microscopy (FESEM), field emission transmissive electron microscopy (FETEM), ultraviolet/visible spectroscopy, and photoluminescence (PL) were used in the paper. , to observe the surface morphology of the film, the size of the crystal phase and size, luminous wavelengths and other optical properties. The solar cells are observed and analyzed through the solar simulator J-V curve, open circuit voltage, short-circuit current, fill factor, and power conversion efficiency.
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