金屬鹵化鈣鈦礦塊材之光致發光及光致變色特性研究;Photoluminescence and photochromic properties of metal halide perovskite bulk crystals

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/84973

Title:	金屬鹵化鈣鈦礦塊材之光致發光及光致變色特性研究;Photoluminescence and photochromic properties of metal halide perovskite bulk crystals
Authors:	黃子軒;HUANG, TZU-HSUAN
Contributors:	光電科學與工程學系
Keywords:	變溫光譜;光致發光光譜;光致變色光譜;有機無機鈣鈦礦;warm-up temperature;photoluminescence spectrum;photochromic;metal halide perovskite
Date:	2021-01-25
Issue Date:	2021-03-18 17:05:16 (UTC+8)
Publisher:	國立中央大學
Abstract:	本文主要針對混合鹵化物鈣鈦礦: CH3NH3PbBr3、CH3NH3PbBr2.25Cl0.75、CH3NH3PbBr2Cl1、CH3NH3PbBr1.5Cl1.5、CH3NH3PbCl3 上述材料做實驗的分析。第一部分的實驗是量測上述五種混合鹵化物鈣鈦礦的光致發光光譜，可以找出材料本身能階所在的位置以及利用曲線擬合分析出Br的缺陷能階所在的波長，接著利用加熱平台讓材料做升溫的處理，在升溫的過程中可以看到不同比例的鹵化物鈣鈦礦光致發光光譜有不同的變化，會發現在特定比例的鹵化物鈣鈦礦在升溫的過程中能量可以很穩定，後續也針對顏色做了分析，特定比例的鹵化物鈣鈦礦在升溫的過程中不會隨著升溫而有顏色的變化。第二部分的實驗是量測升溫過程的鹵化物鈣鈦礦光致變色光譜，當Br主導的鹵化物鈣鈦礦，在600nm附近的吸收以及波谷的位置會隨溫度上升而增加，而Cl主導的鹵化物鈣鈦礦在升溫過程可以看到在550nm附近吸收及波谷的位置會隨溫度上升而降低。 ;This research focuses on the metal halide perovskite: CH3NH3PbBr3、CH3NH3PbBr2.25Cl0.75、CH3NH3PbBr2Cl1、CH3NH3PbBr1.5Cl1.5、CH3NH3PbCl3 analysis of the above material for experimentation. The first part of the experiment is to measure the photoluminescence spectra of the above five metal halide perovskite, it is possible to find out the location of the energy level of material itself and use the curve fitting to analyze the wavelength of the defect energy level of Br, then use the heating platform to warm up the material, during the warming process, we can see different changes in the photoluminescence spectra of different proportions of metal halide perovskite, it is found that the energy of a specific percentage of metal halide perovskite can be very stable during the heating process, meanwhile, further discussion on color changes of halide perovskite is made, specific percentage of metal halide perovskite does not change color as the temperature rises during the heating process. The second part of the research, measurement of photochromic spectra of metal halide perovskite during warm-up temperature, When Br-dominated metal halide perovskite, the absorption near 600nm and the location of the dip will increase with temperature, The Cl-dominated metal halide perovskite can be seen to decrease in absorption and dip position near 550 nm as the temperature rises during the heating process.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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