中文摘要：

采用胶体化学法制备了CdSe@CdTe核壳量子点,将其置于CdTe量子点层与CdSe量子点层间构筑了三层结构的全无机薄膜太阳能电池（ITO/CdTe/CdSe@CdTe/CdSe/Al）,在电池制备过程中对量子点薄膜进行了退火处理。吸收光谱、荧光光谱及荧光寿命测试结果表明所制备的CdSe@CdTe量子点为典型的Ⅱ型量子点。其光电转换性能测量结果表明所制太阳能电池具有高达0.48%的能量转换效率,这主要得益于三层量子点间能带能量的差异对电子与空穴的定向传输的促进以及退火工艺对薄膜结晶质量的改善。

英文摘要：

CdSe@CdTe core-shell quantum dots were prepared through the colloid chemical method. All inorganic thin film solar cells with a three-layer structure（ITO/CdTe/CdSe@CdTe/CdSe/Al） were prepared by inserting the prepared core-shell quantum dots between CdTe and CdSe quantum dots layers. During the preparation process of solar cells, as-prepared quantum dots films were annealed. The measurement results of absorption spectrum, photoluminescence（PL） spectrum, and PL lifetime confirm a typical type II quantum dots for as-prepared CdSe@CdTe quantum dots. The measurement result of photoelectric conversion characteristic show that the power conversion efficiency（PCE） of the solar cells is up to 0.48%, which is attributed to the following two aspects, the difference of bandgap energy between three quantum layers can promote the directed transportation of electrons and holes, the crystallinity of the film is effectively improved by annealing.