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《Advanced Optical Materials》封面报道王军转副教授、余林蔚教授和施毅教授课题组在仿生叠层径向结RGB全色彩分辨探测器最新进展
        仿生纳米结构可为探索新型高效光电探测带来全新的机遇。基于前期硅基纳米线径向结薄膜太阳能电池技术(Radial Junction solar cells, 详见附件相关工作列表),课题组首次提出并实现了仿生视网膜杆状感光细胞结构的叠层径向结(Radial tandem junction, RTJ)光电探测器件。该纳米光电探测器件构建于直径20~40纳米,长1微米左右的自组装生长晶硅纳米线上,由双层非晶硅PIN径向结组成。如此,该RJT结构对入射光有独特的腔模式共振波长选择的特性,使得不同波长的光在探测器不同区域被吸取并产生光电子,从而实现对不同颜色/波长的分辨能力。实验验证表明,此RTJ仿生探测器件单元不需要任何透镜体系即可能够实现RGB全彩色分辨响应。因此,集成了自供电、色彩分辨、体积小、集成度高等特点,有望进一步实现超高分辨成像技术,以及在视网膜假体中得以应用。
 
 
 视网膜感光细胞仿生的硅基径向双结示意图及SEM图片
        该工作以“Biomimetic Radial Tandem Junction Photodetector with Natural RGB Color Discrimination Capability” 为题,于2017年8月29日在线发表在《Advances Optical Materials》https://doi.org/10.1002/adom.201700390,并被编辑推荐为Front Cover报道。第一编辑为研究生杨帆同学,王军转、余林蔚和施毅为共同通讯编辑。以云顶娱乐官网、人工微结构科学与技术协同创新中心为主要研究平台,受到科技部、国家自然科学基金委、江苏省杰青、“江苏省双创团队计划”等项目的资助。
 
附件:近期相关工作列表
1.      Ultra-fast solar-blind ultraviolet detection by inorganic perovskite CsPbX3 quantum dots radial junction architecture
Jiawen Lu, Xuexi Sheng, Guoqing Tong, Zhongwei Yu, Xiaolin Sun, Linwei Yu,* Xiangxin Xu,* Junzhuan Wang, Jun Xu, Yi Shi, and Kunji Chen
Advanced Materials 29, 1700400 (2017)
2.      Bi-Sn alloy catalyst for simultaneous morphology and doping control of silicon nanowires in radial junction solar cells
Zhongwei Yu, Jiawen Lu, Shengyi Qian, Soumyadeep Misra, Linwei Yu,* Jun Xu, Ling Xu, Junzhuan Wang, Yi Shi, Kunji Chen, and Pere Roca i Cabarrocas
Applied Physics Letters 107, 163105 (2015)
3.      How tilting and cavity-mode-resonant absorption contribute to light harvesting in 3D radial junction solar cells
Jiawen Lu, Shengyi Qian, Zhongwei Yu, Soumyadeep Misra, Linwei Yu,* Jun Xu, Yi Shi, Pere Roca i Cabarrocas, and Kunji Chen
Optics Express 23, A1288 (2015)
4.      Full potential of radial junction Si thin film solar cells with advanced junction materials and design
Shengyi Qian, Soumyadeep Misra, Jiawen Lu, Zhongwei Yu, Linwei Yu,* Jun Xu, Junzhuan Wang, Ling Xu, Yi Shi, Kunji Chen and Pere Roca i Cabarrocas
Applied Physics Letters 107, 043902 (2015)
5.      Boosting light emission from Si-based thin film over Si and SiO2 nanowires architecture
Zhongwei Yu, Shengyi Qian, Linwei Yu*, Soumyadeep Misra, Pei Zhang, Junzhuan Wang, Yi Shi, Ling Xu, Jun Xu, Kunji Chen, and Pere Roca i Cabarrocas,
Optics Express 23, 5388 (2015)
6.      Understanding Light Harvesting in Coaxial Multilayer Radial Junction Solar Cells
Linwei Yu, Soumyadeep Misra, Junzhuan Wang, Shengyi Qian, Martin Foldyna, Jun Xu, Yi Shi, Erik Johnson, and Pere Roca i Cabarrocas
Scientific Reports 4, 4357 (2014)
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