汇报题目：SPIE Photonics Europe 2018 参会报告

汇报时间：2018年5月3日(星期四)  9：00

汇报地点：科技园西五楼北A302会议室

汇报人：杨慧著

会议名称：SPIE Photonics Europe 2018

会议时间：22-26 April 2018

会议地点：Palais de la Musique et des Congrès, Strasbourg, France

会议简介：SPIE is an international society advancing an interdisciplinary approach to the science and application of light. It serves as an advocate and liaison to political and industry associations within the European optics and photonics community, and sponsors and organises world-class technical events throughout Europe. The international society for optics and photonics provides a unique opportunity for researchers from a variety of fields to exchange ideas and techniques, and fosters discussion on fundamental aspects of laser-matter interaction and the state-of-the-art in laser materials processing among pure scientists, end users and laser manufacturers. We expect that the participation would play an important role not only for understanding fundamental knowledge of laser precision microfabrication but also forecasting future technologies to be developed and the future laser market.

会议交流工作

报告人：杨慧著

参加论文信息

poster: Formation of nanostructures on the surface of CIGS films by picosecond laser with different beam patterns

Title: Formation of nanostructures on the surface of CIGS films by picosecond laser with different beam patterns

Author: Huizhu Yang, Gedong Jiang, Wenjun Wang, Xuesong Mei, Ming Li

Abstract: As direct band gap semiconductor, CIGS thin film solar cells has developed rapidly in recent years. Nano-ripples on transparent layer of CIGS solar cells can improve the light absorption. The photoelectric conversion efficiency improved and the thickness of solar cell decreased with the requirement of optical absorptivity. This study proposed a key technological point concerning the obtainment of perfect LIPSSs using picosecond laser with different beam pattern. Linear sweep in parallel to the laser polarization direction was performed using a Nd:VAN laser system with 10-ps Q-switched pulsed at a central wavelength of 532 nm with a repetition rate of 1 kHz. The nanostructure with different characteristics were obtained at different laser fluence and scanning speed which was focused with circular spot. The linear spot pattern can improve the processing efficiency greatly. In this way, three kind of morphologies were obtained successfully at the same parameter, which was useful for processing different kind of nanostructures. To our knowledge, it is the first time that we report the LIPSSs formed on CIGS absorber layers. Thus, the proposed technique can be considered to be a promising method for the laser machining of special nonmetal films.