基于n型PbS量子点薄膜的太阳能电池研究

项目名称： 基于n型PbS量子点薄膜的太阳能电池研究

项目编号： No.61274055

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 唐江

作者单位： 华中科技大学

项目金额： 81万元

中文摘要： 量子点太阳能电池既具有多激子效应能突破单结太阳能电池33% 的Shokley-Queisser理论极限，又能溶液成膜实现卷到卷连续低成本生产，是新一代太阳能电池研究的前沿和热点。自2005年首次报道以来，基于p型量子点薄膜的量子点太阳能电池已经获得外量子效率114%，外部认证5.1%光电转换效率的器件，发展非常迅速。本项目拟利用本人首次得到的高载流子迁移率、低掺杂浓度的n型PbS量子点薄膜，发展高质量的p型PbS量子点、p型Cu2S 和SnS薄膜制备方法，复合构建新型的p-PbS/n-PbS 同质结和p-Cu2S/n-PbS、p-SnS/n-PbS 异质结量子点太阳能电池。预期通过材料合成和器件制作的系统优化，得到光电转换效率为9%的异质结量子点太阳能电池，达到国际先进水平。

中文关键词： PbS量子点；太阳能电池；N型薄膜；光电探测器；

英文摘要： Colloidal quantum dots (CQDs) solar cell not only has the potential to break the 33% Shokleyy-Queisser efficiency limit for single junction solar cells thanks to multiple exciton generation effect, but also enables high-throughput, low-cost roll-by-roll manufacturing from solution process. Consequently, CQD solar cells are the frontier and hot topic of next generation solar cell research. CQD solar cells, rely exclusively on p-type CQD film so far, have seen rapid research progress since its first report in 2005 and have obtained an external quantum efficiency of 114% and a certified photon-to-electron energy conversion efficiency of 5.1%. Here we proposed to develop new strategies to build high quality p-type PbS CQD film and p-type Cu2S and SnS film. This, in combination with the high carrier mobility, low doping density n-type PbS CQD films first developed by myself, will lead to a new class of CQD solar cells: p-PbS/n-PbS homojunction solar cells and p-Cu2S/n-PbS, p-SnS/n-PbS heterojunction solar cells. We expect a heterojunction CQD solar cell with 9% efficiency, an international advanced level,through systematic material and device optimization.

英文关键词： PbS colloidal quantum dots；solar cells；n-type thin films；photodetectors；