Pak Hunkyun, Yoo Young Ran
Advanced Solar Technology Research Department, Electronics and Telecommunications Research Institute, Daejeon 305-700, Korea.
J Nanosci Nanotechnol. 2012 Feb;12(2):1679-83. doi: 10.1166/jnn.2012.4630.
Dye sensitized solar cells (DSSC) with surface modified carbon fiber fabric (CF) counter electrodes were prepared and tested. Four different type of CF were used; carbon fiber (CF); carbon fiber etched with NaOH (ECF); carbon fiber with thermally deposited platinum (CFPt); and carbon fiber etched with NaOH followed by thermal deposition of platinum (ECFPt). For comparison, DSSC with thermally Pt deposited fluorine doped tin oxide (FTO/Pt) glass counter electrode was also prepared and tested. Scanning electron microscope (SEM) proved that surface morphology of the carbon fiber was roughened by the etching process and platinum deposition process. The I-V curves of each DSSC were measured under simulated light (1 Sun, AM 1.5) to get open circuit voltage (Voc), short circuit current density (Jsc), fill factor (FF) and efficiency (eta). Electrochemical impedance spectroscopy of each cell was measured also. It was found that higher efficiency is obtained in order of using ECFPt > CFPt > FTO/Pt > ECF > CF counter electrode.
制备并测试了具有表面改性碳纤维织物（CF）对电极的染料敏化太阳能电池（DSSC）。使用了四种不同类型的CF；碳纤维（CF）；用NaOH蚀刻的碳纤维（ECF）；热沉积铂的碳纤维（CFPt）；以及先用NaOH蚀刻然后热沉积铂的碳纤维（ECFPt）。为了进行比较，还制备并测试了具有热沉积铂的氟掺杂氧化锡（FTO/Pt）玻璃对电极的DSSC。扫描电子显微镜（SEM）证明，蚀刻过程和铂沉积过程使碳纤维的表面形态变得粗糙。在模拟光（1个太阳，AM 1.5）下测量每个DSSC的I-V曲线，以获得开路电压（Voc）、短路电流密度（Jsc）、填充因子（FF）和效率（eta）。还测量了每个电池的电化学阻抗谱。结果发现，使用ECFPt > CFPt > FTO/Pt > ECF > CF对电极时，效率依次提高。
