【作者】 王立晶； 孙海珠；

【Author】 Li-Jing Wang;Hai-Zhu Sun;College of Chemistry,Northeast Normal University;

【机构】 东北师范大学化学学院；

【摘要】 近年来,随着环境污染和能源危机日益严峻,可再生的新型能源例如太阳能受到越来越多的关注[1-2],其中以Cd Te为代表的水相太阳能电池,具有高效、稳定、操作简单和环境友好等优点,但Cd是一种毒性较高的元素,选择其它元素替代Cd成为学者们研究的热点。本文以绿色无毒的Zn代替部分Cd元素,成功制备出水相三元量子点Zn_xCd_1-xTe,大大降低了量子点的毒性,并通过XRD、SEM、AFM、UV、UPS等方法对量子点进行了表征,确定了三元量子点的成分和形貌。当Cd与Zn比例为4、制备太阳能电池时使用的量子点浓度为140 mg m L^-1、退火温度为315℃时,Zn0.2Cd0.8Te无机太阳能电池的效率达到了4.28%,高于相同条件下制备的Cd Te无机量子点太阳能电池（3.5%）,这对于降低水相太阳能电池的毒性,提高电池效率具有重要意义。更多还原

【Abstract】 Cd Te solar cells, which shares the advantages of high efficiency, stability and environmental friendly[1-2], have attracted much attention. However, Cd is a kind of high toxic element. In this work, water-soluble Cd_xZn_1-xTe quantum dots have been successful prepared, which greatly reduced the toxicity of quantum dots. The experimental results showed a power conversion efficiency of 4.28%, which was higher than Cd Te quantum dot solar cells under the same condition（3.5%）. The results are of great significance to reduce the toxicity of water-soluble solar cells and improve the battery efficiency.更多还原