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J.Mater.Chem.A: Professor Sixin Wu's group published a research on regulating the starting location of front-gradient of CIGS solar cell

来源: 河南大学纳米科学与材料工程学院    日期:2018-05-18   浏览次数:

 Recently, Prof. Sixin Wu’s group has published an article entitled as “Regulating the starting location of front-gradient enabled highly efficient Cu(In,Ga)Se2 solar cells via a facile thiol–amine solution approach” in Journal of Materials Chemistry A. Article link: http://dx.doi.org/10.1039/C7TA10889C

 The introduction of a double-gallium (Ga) gradient plays a key role in pushing the performance of Cu(In,Ga)Se2 (CIGSe) solar cells to a more competitive level. In particular, the location of the front-gradient starting position strongly affects the barrier of the electron transport path, and this is not based on either significantly reducing the electron collection or decreasing the fill factor. In this paper, a double-Ga gradient design for CIGSe absorber layers was fabricated using a diamine–dithiol solution approach. By regulating the front-gradient starting location, three CIGSe absorber layers with different Ga gradients were successfully constructed; these materials maximize solar spectrum absorption and improve the charge collection efficiency. Moreover, this facile solution-process approach does not require expensive vacuum equipment and can be applied to roll-to-roll printing technology. By combining optimal front-gradients with the back gradient, the short-circuit current has been increased by 17% and a maximum improvement in CIGSe efficiency to 13.12% achieved through adjusting the front-gradient to an optimum location.

 

http://lab.henu.edu.cn/__local/5/FC/A1/1869428387EBDF3B11E5F628758_3A53E667_C32D.png

 

 

【上一篇】:J.Phys.Chem.C: Professor Zuliang Du's group published a research on photoinduced electron transfer between quantum dots and C60 rods

【下一篇】:Chem. Soc. Rev.: Prof. Yong Zhao's Group published a review paper

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