马万里教授和刘泽柯副教授合作在Adv. Mater.上发表论文

发布时间:2022-12-05访问量:10设置

题目:

Merging Passivation in Synthesis Enabling the Lowest Open-Circuit Voltage Loss for PbS Quantum Dot Solar Cells

作者:

Yang Liu1,#, Hao Wu1,#, Guozheng Shi1, Yusheng Li3, Yiyuan Gao1,Shiwen Fang1, Haodong Tang4Wei Chen4Tianshu Ma6Irfan Khan1, Kai Wang5, Changlei Wang6, Xiaofeng Li6, Qing Shen3, Zeke Liu1,2,* and Wanli Ma1,2,*

单位:

1Institute of Functional Nano & Soft Materials (FUNSOM), Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, Jiangsu, PR China

2Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123, Jiangsu, P. R. China

3Faculty of Informatics and Engineering The University of Electro-Communications Tokyo 182-8585, Japan

4Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China

5College of Engineering Physics Shenzhen Technology University Shenzhen 518118, China

6School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology; Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China Soochow University Suzhou 215006, China

摘要:

The high open-circuit voltage (Voc) loss arising from insufficient surface passivation is the main facto  that limits the efficiency of current PbS colloidal quantum dots (CQDs) solar cell. Here, we perform synergistic passivation in the direct synthesis of conductive PbS CQD inks by introducing multifunctional ligands to well coordinate the complicated CQDs surface with the thermodynamically optimal configuration. The improved passivation effect is intactly delivered to the final photovoltaic device, leading to an order lower surface trap density and beneficial doping behavior compared to the control sample. The obtained CQD inks show the highest PLQY of 24% for all photovoltaic PbS CQD inks, which is more than twice the reported average PLQY value of 10%. As a result, a high Voc of 0.71 V and PCE of 13.3% is achieved, which results in the lowest Voc loss (0.35 eV) for the reported PbS CQD solar cells with PCE >10%, comparable to that of perovskite solar cells. Our work provides valuable insights into the future CQDs passivation strategies and also demonstrates the great potential for the direct-synthesis protocol of PbS CQDs.

影响因子:

30.849

分区情况:

一区

链接:

https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.202207293


责任编辑:郭佳


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