本文選題：有機(jī)鉛鹵化物鈣鈦礦太陽能電池 + 甲胺鉛碘鈣鈦礦薄膜　； 參考：《長春理工大學(xué)》2017年碩士論文

【摘要】：近幾年,有機(jī)金屬鹵化物鈣鈦礦太陽能電池由于潛在的科研和商用價(jià)值,得到廣泛關(guān)注。有機(jī)金屬鹵化物鈣鈦礦薄膜層,不僅可以充當(dāng)活性層吸收光能,還具備傳輸空穴和電子的能力。人們發(fā)現(xiàn)了多種制備高質(zhì)量有機(jī)金屬鹵化物鈣鈦礦薄膜的方法,其中一步溶液法由于操作簡單,應(yīng)用比較普遍。本文采用一步溶液法在不同比例共混下制備甲胺鉛碘鈣鈦礦薄膜,并研究了不同條件下薄膜的物理和化學(xué)性質(zhì)。主要內(nèi)容如下:(1)不同比例共混制備甲胺鉛碘鈣鈦礦薄膜及性能表征。一步法制備碘化鉛(Pb I2)與碘甲胺(CH3NH3I)摩爾比分別為1:1,1:1.5和1:2的甲胺鉛碘鈣鈦礦薄膜,發(fā)現(xiàn)薄膜具有相同的吸收邊帶,結(jié)晶性也相似。與等摩爾比共混的薄膜相比,碘甲胺過量時(shí),晶體的尺寸較大。摩爾比為1:1時(shí)晶體尺寸為0.2μm,摩爾比為1:1.5和1:2時(shí)晶體尺寸分別為1.5μm和1μm。(2)熱退火對(duì)甲胺鉛碘鈣鈦礦薄膜相轉(zhuǎn)變的影響。不同比例下甲胺鉛碘鈣鈦礦薄膜具有相似的相轉(zhuǎn)變過程,在熱退火升溫過程中,60℃時(shí)甲胺鉛碘鈣鈦礦的四方相完全轉(zhuǎn)變?yōu)榱⒎较?當(dāng)降到室溫時(shí),立方相部分轉(zhuǎn)變?yōu)樗姆较�。由此可�?甲胺鉛碘鈣鈦礦的相轉(zhuǎn)變是可逆的,立方相是甲胺鉛碘鈣鈦礦的亞穩(wěn)態(tài),常溫下四方相更穩(wěn)定。(3)甲胺鉛碘前驅(qū)體薄膜在室溫大氣中的結(jié)構(gòu)演變及對(duì)后續(xù)鈣鈦礦薄膜的影響。甲胺鉛碘前驅(qū)體薄膜在空氣中放置一段時(shí)間后,薄膜顏色由灰黑色逐漸變成黑褐色,退火后變成黑色。利用紫外-可見吸收光譜、X射線衍射以及原子力表面形貌等手段進(jìn)行了系統(tǒng)研究。甲胺鉛碘前驅(qū)體薄膜在常溫空氣放置過程中,前驅(qū)體物質(zhì)在消失,且有甲胺鉛碘鈣鈦礦生成。對(duì)比二者的退火結(jié)果,新制備的甲胺鉛碘前驅(qū)體薄膜的X射線衍射強(qiáng)度和光譜強(qiáng)度都比放置的薄膜高,且晶體尺寸也較大。本文的研究,為探討甲胺鉛碘鈣鈦礦制備工藝、生成機(jī)理及其基本特性研究提供了新的思路和方向,對(duì)甲胺鉛碘鈣鈦礦太陽能電池及相關(guān)光電器件研究和應(yīng)用有一定指導(dǎo)意義。
[Abstract]:In recent years, organic metal halide perovskite solar cells have attracted wide attention because of their potential research and commercial value. The perovskite thin film layer of organometallide halides not only can absorb light energy in the active layer, but also possess the ability to transmit holes and electrons. Many kinds of high quality organometallide perovskite have been found. One step solution method is simple and widely used because of its simple operation. In this paper, one step solution method is used to prepare methylamine, lead and iodine Perovskite Thin Film under different proportions, and the physical and chemical properties of the films under different conditions are studied. The main contents are as follows: (1) the preparation of methylamine perovskite Perovskite Thin Film by blending with different proportions It can be characterized by one step method to prepare lead iodide (Pb I2) and iodimethylamine (CH3NH3I) mole ratio of 1:1,1:1.5 and 1:2 to the methylamine perovskite Perovskite Thin film respectively. It is found that the film has the same absorption band and the crystallinity is similar. When the mole ratio is overdose, the size of the crystal is larger when the mole ratio is 1:1, and the crystal size is 0.2 when the molar ratio is 1:1. The phase transition of methylamine, lead and iodine Perovskite Thin film is affected by the crystal size of 1.5 mu m and 1 m. (2), respectively, when the molar ratio is 1:1.5 and 1:2. The phase transition process of methylamine lead iodide Perovskite Thin Film under different proportions is similar. During the heat annealing process, the tetragonal phase of methylamine, lead and iodine perovskite is completely converted into cubic phase at 60 C; when the temperature is reduced, the phase of the tetragonal phase of the methylamine lead and iodine perovskite is completely converted to cubic phase. At room temperature, the cubic phase change to the Quartet phase. Thus, the phase transition of methylamine lead iodide perovskite is reversible, the cubic phase is the metastable state of methylamine lead iodide perovskite, and the Quartet phase is more stable at room temperature. (3) the structure evolution of methylamine lead iodine precursor film at room temperature and the effect on the subsequent perovskite film. After the film was placed in the air for a period of time, the color of the film gradually changed from gray to black to black, and then turned black after annealing. By means of ultraviolet visible absorption spectrum, X ray diffraction and the surface morphology of atomic force, the precursor material of methylamine lead iodine was disappearing during the constant temperature air placement. The X ray diffraction intensity and spectral intensity of the newly prepared methylamine, lead and iodine precursor films are higher than those of the deposited films, and the crystal size is larger than those of the two ones. This study provides a new method for the study of the preparation of methylamine lead iodide perovskite, the formation mechanism and the basic characteristics of the study. The ideas and directions are of guiding significance for the research and application of methylamine lead iodine perovskite solar cells and related photoelectric devices.
【學(xué)位授予單位】：長春理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM914.4

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