Kim Yong Joo, Kim Hark Jin, Lee Mi Hyeon, Lim Goo Il, Song Hye Young, Choi Young Sik, Park Nam-Gyu, Lee Chongmu, Lee Wan In
Department of Chemistry, Inha University, Incheon, 402-751, Korea.
J Nanosci Nanotechnol. 2010 Jan;10(1):340-4. doi: 10.1166/jnn.2010.1528.
13 nm-sized highly-dispersible TiO2 nanoparticle was synthesized by solvothermal reaction of titanium isopropoxide in a basic condition with tetrabutylammonium hydroxide (TBAH). The prepared TiO2 nanoparticle was applied to fabrication of the transparent nanoporous TiO2 layer with 1.2 microm-thickness. By introducing this buffer layer between FTO and main TiO2 layer in the dye-sensitized solar cell (DSSC), the photovoltaic conversion efficiency was improved from 5.92% to 7.13%. Due to the excellent antireflective role of nanoporous TiO2 buffer layer, the transmittance of FTO glass was increased by 9.2%, and this seemed to be one of the major factors in enhancing photovoltaic conversion efficiency. Moreover, the presence of nanoporous TiO2 buffer layer induces excellent adhesion between FTO and main TiO2 layer, as well as it suppresses the back reaction by blocking direct contact between I3- and FTO electrode.
通过异丙醇钛在碱性条件下与四丁基氢氧化铵（TBAH）进行溶剂热反应，合成了尺寸为13纳米的高度分散的TiO₂纳米颗粒。将制备的TiO₂纳米颗粒应用于制备厚度为1.2微米的透明纳米多孔TiO₂层。通过在染料敏化太阳能电池（DSSC）的FTO和主TiO₂层之间引入该缓冲层，光伏转换效率从5.92%提高到了7.13%。由于纳米多孔TiO₂缓冲层具有出色的抗反射作用，FTO玻璃的透光率提高了9.2%，这似乎是提高光伏转换效率的主要因素之一。此外，纳米多孔TiO₂缓冲层的存在促使FTO和主TiO₂层之间具有出色的附着力，并且通过阻止I₃⁻与FTO电极直接接触来抑制背反应。
