孙旭辉教授与张浩副教授合作在Adv. Funct. Mater.上发表论文

作者：

Xiaolan Xu^1#, Xuewei Hao^1#, Yi Tao¹*, Kanghong Wang^1,2, Xiaodong Chen¹, Yijie Wu¹, Youyong Li¹, Hao Zhang¹*, and Xuhui Sun¹*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, P. R. China.

²Sustainable Energy and Environmental Materials Innovation Center, Suzhou Institute for Advanced Research University of Science and Technology of China, Suzhou 215123, P. R. China.

摘要：

Engineering the morphology of quantum dots (QDs) is a pivotal strategy for enhancing the photoelectrochemical (PEC) hydrogen production efficiency by manipulating charge distribution. Still, it remains challenging due to the lack of precise synthesis methods. This work introduces a thermally modulated synthesis protocol that enables precise control over the shell morphology of core–shell QDs. By varying the shell-growth temperature during the successive ionic layer adsorption and reaction (SILAR) process, two distinct configurations: pyramid-shaped (CS-pyr) and spherical-shaped (CS-sph) QDs are fabricated. Both types comprise the same CdSe cores with a gradient Cd_xZn_1-xSe shell. When integrated into photoanodes, the CS-pyr QDs-based photoanode exhibits a significantly enhanced photocurrent density (J_ph, 23.2 mA cm⁻²) in comparison with CS-sph QDs-based photoanode (16.6 mA cm⁻²), which is also among the most efficient QDs-based PEC systems. Comprehensive experimental and theoretical analyses reveal that the pyramidal geometry of the CS-pyr QDs induces an asymmetric distribution of photo-generated electrons and holes, leading to enhanced charge separation and transfer efficiency. These findings underscore the potential of morphology control as a powerful strategy for optimizing carrier dynamics, laying the groundwork for the design of advanced photoelectronic materials.

影响因子：

19.0

分区情况：

一区

链接：

https://doi.org/10.1002/adfm.202509250