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Optical micro-nano structure preparation and application of

Author: ZhuXiaoLong
Tutor: LiuXiaoZuo
School: Fudan University
Course: Condensed Matter Physics
Keywords: Optical micro-nano structures Self-assembly Surface plasmon Nanoimprint Organic phosphorescent material Thin film solar cell
CLC: TH703
Type: Master's thesis
Year: 2011
Downloads: 151
Quote: 0
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Abstract

Optics with micro-nano structure of wave optics and nanotechnology development, has made considerable progress in the field of photonics has become today's mainstream research. Current research includes the use of optical micro-nano structure to achieve light transmission, emission and absorption properties of the control and other work. Although the structure of the optical micro-nano preparation and application of research has lasted 20 years time, there are still many problems and challenges, such as the preparation of the current method is not only costly and time-consuming long; structure size or structure parameters optical properties due to the course of the preparation can not be changed once set; how efficiently the optical micro-nano structures with many advantages of LED lighting and solar cell power generation industry and national economy associated upper. In response to these problems, this paper is divided into five chapters to expand the analysis and discussion. The first chapter of the optical micro-nano structures properties and applications made a brief discussion, and briefly reviews the optical micro-nano structured development process and the latest research progress. The second chapter describes our research group in the structure of the optical micro-nano gradually with the preparation and use of experimental characterization methods and theoretical simulation methods. In addition, this chapter also lists the topics in the study of the process of preparation of several optical micro-nano structure instance. By author self-assembly and electrochemical deposition, nano-imprint, the contact transfer of technology combine to achieve a series of large-area, low cost, high efficiency optical micro-nano structure preparation methods. The third chapter is about a real-time tunable surface plasmon structures preparation method and application prospect research. Through the introduction of soft and flexible material as the substrate, we can use force to adjust the sample periodicity, symmetry and other structural parameters, to achieve real-time control of the surface plasmon optical response properties of structural purposes. Relative to the previous research work of others, our system better able to freely adjust the surface plasmon resonance peak to move it up to 50 nm or more, up to 50% deformation and the structure is not destroyed. In the fourth chapter, we carried out on the structure of the surface plasmon enhanced photoluminescence effect of OLED materials research. As the metal structure of the surface plasmon effect, the material photoluminescence intensity significantly enhanced overall increased more than four times, and in the surface plasmon strong resonance mode under the effect of the photoluminescence spectra of some bands get close to 40 times the increase, so that the entire spectral broadening have been better. Fifth chapter describes the use of optical micro-nano structured organic thin film solar cell efficiency enhancement related research work. We in the organic thin film solar cell into sub-wavelength structure of the grating structure scale, enhance the co-operation based on a new synthesis of low band gap material of organic heterojunction solar cell device of the light absorption rate, and because the grating structure increasing the surface relief of the specific surface area of ??the device, or the fill factor, and thus the photoelectric conversion efficiency of the battery increased by about 30%.

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