本文關(guān)鍵詞：銅鋅錫硫（CZTS）納米材料及薄膜的溶液法制備及其光伏性質(zhì)探索　出處：《南京郵電大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 薄膜太陽(yáng)能電池 銅鋅錫硫納米粒子 熱注入 無(wú)毒 電噴霧 光導(dǎo)

【摘要】：鋅黃錫礦結(jié)構(gòu)的銅鋅錫硫（CZTS）材料與目前在薄膜太陽(yáng)能電池領(lǐng)域表現(xiàn)出色的黃銅礦結(jié)構(gòu)的銅銦鎵硒（CIGS）材料具有相似的晶體結(jié)構(gòu)和光電性能。銅鋅錫硫材料的光學(xué)帶隙為1.5eV，更接近太陽(yáng)能電池的最佳光學(xué)帶隙。銅鋅錫硫太陽(yáng)能電池的組成元素在地球中含量豐富，且硫比硒的毒性要小很多。因此銅鋅錫硫非常適合替代含稀有元素銦及高毒性硒的銅銦鎵硒來(lái)發(fā)展高效、廉價(jià)的太陽(yáng)能電池。 本論文針對(duì)目前銅鋅錫硫太陽(yáng)能電池的制備現(xiàn)狀，旨在開(kāi)發(fā)出一種低成本、環(huán)保無(wú)毒且易于規(guī)模化的制備方法。論文主要研究?jī)?nèi)容分為兩個(gè)方面。 第一，我們首先從合成適合用于溶液法制備銅鋅錫硫薄膜的材料入手，分別用溶劑熱法和熱注入法制備了一系列銅鋅錫硫微米和納米粒子。研究發(fā)現(xiàn)用本論文中溶劑熱方法制備得到的銅鋅錫硫粒子一般為微米量級(jí)，且其形貌不易控制，，不太適合用來(lái)制備高質(zhì)量的銅鋅錫硫薄膜；而使用熱注入方法制備所得銅鋅錫硫粒子一般為納米量級(jí)且單分散性良好。其次，在熱注入方法中，我們使用一種新型無(wú)毒溶劑聚乙二醇（PEG）代替文獻(xiàn)中大量使用的有毒溶劑油胺制備得到了銅鋅錫硫納米粒子，并對(duì)不同溶劑的產(chǎn)物進(jìn)行了對(duì)比研究。 第二，我們將使用無(wú)毒溶劑聚乙二醇所合成的納米粒子配制成銅鋅錫硫納米粒子“油墨”，并分別使用旋涂法和電噴霧法制備了銅鋅錫硫薄膜，實(shí)驗(yàn)發(fā)現(xiàn)，本論文中電噴霧法制備的銅鋅錫硫薄膜具有更好的均一性且薄膜厚度容易控制。為了進(jìn)一步驗(yàn)證該材料的光電特性，我們對(duì)使用電噴霧制備的銅鋅錫硫薄膜進(jìn)行了光導(dǎo)測(cè)試并設(shè)計(jì)和制備了簡(jiǎn)單的混合異質(zhì)結(jié)器件，實(shí)驗(yàn)發(fā)現(xiàn)，在光照條件下該材料會(huì)產(chǎn)生大量的光生載流子且該材料在異質(zhì)結(jié)光伏器件中展示了良好的光伏特性。
[Abstract]:Copper, Zinc, Tin Sulphur (CZTS) and Copper, Indium, Gallium, selenium (CIGS), with excellent performance in thin Film Solar cells. The material has similar crystal structure and optoelectronic properties. The optical band gap of copper, zinc, tin and sulfur is 1.5 EV. Closer to the best optical gap for solar cells. Copper, zinc, tin and sulfur solar cells are rich in elements in the Earth. Therefore, copper, zinc, tin and sulfur are suitable to replace copper, indium, gallium and selenium containing rare elements and highly toxic selenium to develop efficient and cheap solar cells. This paper aims at developing a low cost, non-toxic and easy to scale preparation method for copper, zinc, tin and sulfur solar cells. The main contents of this paper are divided into two aspects. Firstly, we begin with the synthesis of copper, zinc, tin and sulfur films which are suitable for the preparation of copper, zinc, tin and sulfur films by solution method. A series of copper zinc tin sulfur micron and nanometer particles were prepared by solvothermal method and thermal injection method respectively. It is found that the copper zinc tin sulfur particles prepared by solvothermal method in this paper are generally of the order of micron. And its morphology is not easy to control, so it is not suitable for the preparation of high quality copper, zinc, tin and sulfur films. However, the copper, zinc, tin and sulfur particles prepared by thermal injection method are generally nanoscale and monodisperse. Secondly, in the thermal injection method. Copper, zinc, tin and sulfur nanoparticles were prepared by using a new nontoxic solvent, polyethylene glycol (PEG), instead of the toxic solvent oleamine, which is widely used in the literature. The products of different solvents were compared and studied. Secondly, we prepared copper, zinc, tin and sulfur nanoparticles "ink" using non-toxic solvent polyethylene glycol, and prepared copper, zinc, tin and sulfur films by spin coating method and electrospray method respectively. In this thesis, the copper, zinc, tin and sulfur films prepared by electrospray method have better uniformity and the thickness of the films is easy to control. We have tested the photoconductivity of copper, zinc, tin and sulfur films prepared by electrospray and designed and fabricated a simple hybrid heterojunction device. A large number of photogenerated carriers can be generated under light conditions and the material exhibits good photovoltaic properties in heterojunction photovoltaic devices.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM914.4;TB383.1

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