Laser & Optoelectronics Progress, Volume. 56, Issue 12, 120501(2019)
Preparation and Characterization of Multi-Morphological and Multi-Periodical Micro-Nano Composite Structures
In this study, the micro-nano composite structures having multiple morphologies and periods were fabricated via conventional ultraviolet photolithography combined with two-beam laser interference lithography and two-step exposure via two-beam laser interference lithography. The micro-nano composite structure could overcome the shortages imposed by conventional laser photolithography, which yields the microstructures with single morphology and period. By optimizing the experimental parameters, the micro-nano composite structures having different nano-gratings, such as micro-strip gratings, rectangular lattices, circular lattices, and hexagonal lattices, were fabricated. By incorporating the micro-nano composite grating in glass/Ag film/CH3NH3PbI3, the absorption of CH3NH3PbI3 is enhanced in the visible range. This enhancement is mainly attributed to the coaction of light scattering of micro-grating and electric field enhancement of surface plasmon polaritons at the Ag film/CH3NH3PbI3 interface.
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Kang Wang, Yu Jin, Yuwei Liu, Zhixiang Li, Xin Luo, Zhijun Wu, Chunping Xiang. Preparation and Characterization of Multi-Morphological and Multi-Periodical Micro-Nano Composite Structures[J]. Laser & Optoelectronics Progress, 2019, 56(12): 120501
Category: Diffraction and Gratings
Received: Nov. 29, 2018
Accepted: Jan. 29, 2019
Published Online: Jun. 13, 2019
The Author Email: Jin Yu (jinyu1001@hqu.edu.cn), Xiang Chunping (chunpingxiang@jmu.edu.cn)