CAJ | 학술논문

将喷涂法应用于制备染料敏化太阳能电池光阳极,具有浆料制备简单、易操作、成本低廉等优势.本文以钛酸丁酯和P25为原料配制浆料,采用喷涂法制备二氧化钛薄膜,选择乙二醇作为造孔剂,探索了乙二醇的最佳加入量.通过对电池 I- V曲线,二氧化钛薄膜表面粗糙度、染料吸附量和漫反射谱,以及光阳极的扫描电镜照片和交流阻抗图谱的分析,得到如下结果：当乙二醇与钛酸丁酯的体积比为1：1时,二氧化钛薄膜的粗糙度最大,即孔隙率和比表面积最大,因此染料吸附量达到1.47×10-7 mol·cm -2,电池性能最好,其中开路电压为0.69 V,短路电流为13.0 mA·cm -2,光电转化效率达到5.38%,比不加造孔剂时增加了将近1倍,此时电子的扩散转移电阻也最小.
장분도법응용우제비염료민화태양능전지광양겁,구유장료제비간단、역조작、성본저렴등우세.본문이태산정지화P25위원료배제장료,채용분도법제비이양화태박막,선택을이순작위조공제,탐색료을이순적최가가입량.통과대전지 I- V곡선,이양화태박막표면조조도、염료흡부량화만반사보,이급광양겁적소묘전경조편화교류조항도보적분석,득도여하결과：당을이순여태산정지적체적비위1：1시,이양화태박막적조조도최대,즉공극솔화비표면적최대,인차염료흡부량체도1.47×10-7 mol·cm -2,전지성능최호,기중개로전압위0.69 V,단로전류위13.0 mA·cm -2,광전전화효솔체도5.38%,비불가조공제시증가료장근1배,차시전자적확산전이전조야최소.
The spraying method, by which slurry preparation is simple, easy to operate and low cost, was applied to prepare photo-anodes for dye-sensitized solar cells. Nano-TiO2 thin films were prepared by a colloidal spray coating technique, and the spraying slurry mainly included tetra-n-butyl titanate (TBT) and P25. Ethylene glycol (EG) was selected as a pore-forming agent to investigate its optimum addition. Through analyzing the I- V curves of the cells, the roughness, dye adsorption amount and diffuse reflection spec-tra of the thin films, and the scanning electron microscopy images and electrochemical impedance spectra of the photo-anodes, we draw the following conclusions. When the ratio of EG to TBT is 1: 1 by volume, the thin film reaches the largest surface area, the dye ad-sorption amount is 1. 47 × 10 - 7 mol·cm - 2 , and the cell has the best performance with the open-circuit voltage of 0. 69 V, the short cir-cuit current of 13. 0 mA·cm - 2 , and the photoelectric conversion efficiency of 5. 38% . The photoelectric conversion efficiency is nearly two times that without the pore-forming agent, and now the electron transfer resistance is the least.