摘要
首先从高原金莲花中提取天然染料,通过紫外-可见(UV-Vis)吸收光谱和傅里叶变换红外(FTIR)吸收光谱确定其主要成分为花色苷.调节色素溶液的pH值,组装染料敏化太阳能电池(DSCs)并进行光电性能测试.研究发现,随着pH值的升高,电池的开路电压逐渐升高,但是短路电流密度却先升高后降低.分析认为这是由于在不同pH值下,花色苷的结构会发生转换造成的.在pH=5时,该天然染料敏化太阳能电池的光电转换效率最高,达到0.292%.
Trollius chinensis pigment was extracted,and ultraviolet-visible （UV-Vis） absorption and Fourier transform infrared （FTIR） spectroscopy confirmed that anthocyanin compounds were the main components.Dye sensitized solar cells （DSCs） were sensitized from the natural pigments dissolved in different pH solutions.Open-circuit voltage increased with increasing pH,while short-circuit current density first increased and then decreased,attributed to an anthocyanin structural change with pH value.The highest observed power conversion efficiency was 0.292% at pH=5.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2013年第3期539-545,共7页
Acta Physico-Chimica Sinica
基金
青海省昆仑学者计划
青海省科技厅三江源项目(2010-N-S03)
青海省科技厅国际合作项目(2011-H-802)资助~~
关键词
染料敏化太阳能电池
天然染料
PH值
金莲花
光伏性能
Dye sensitized solar cell
Natural pigment
pH value
Trollius chinensis
Photovoltaic perfomance
