CAJ | 학술논문

用溶胶-凝胶法配制了Ti-Si溶胶，并利用浸泡和煅烧法对染料敏化太阳能电池TiO2多孔光阳极进行了修饰处理，研究了Ti-Si氧化物修饰中Si含量对光阳极染料吸附量、TiO 2/染料/电解质界面电荷传输电阻、电子寿命和光电转化性能的影响。发现Ti-Si氧化物修饰钝化了光阳极的表面态，改善了电极的电子寿命，促进了电荷的有效传输，提高了光生电子向TiO 2中的注入效率；当Si含量为摩尔分数10%时，电池获得最高的光电转化效率7.11%。
용용효-응효법배제료Ti-Si용효，병이용침포화단소법대염료민화태양능전지TiO2다공광양겁진행료수식처리，연구료Ti-Si양화물수식중Si함량대광양겁염료흡부량、TiO 2/염료/전해질계면전하전수전조、전자수명화광전전화성능적영향。발현Ti-Si양화물수식둔화료광양겁적표면태，개선료전겁적전자수명，촉진료전하적유효전수，제고료광생전자향TiO 2중적주입효솔；당Si함량위마이분수10%시，전지획득최고적광전전화효솔7.11%。
Ti-Si sols with different Si contents were perpared with sol-gel method. Nanocrystalline TiO2 photoanodes of dye-sensitized solar cells were modified by the Ti-Si oxides with dip coating and calcination methods. The effects of the Si content of Ti-Si oxides on the dye absorption amount of TiO2photoanodes, the charge transport resistance at TiO2/dye/electrolyte interface, the electron lifetime and the photoelectric conversion performance were studied. It is found that Ti-Si oxides passivate surface states and increase the electron lifetime, and promote electron transfer at TiO2/dye/electrolyte interface and enhance photo-electrons injecting into TiO2. The dye-sensitized solar cell modified by Ti-Si oxides shows the highest photoelectric conversion efficiency of 7.11% when the Si content is mole fraction of 10%.