|SURFACE AND CONTACT PASSIVATION FOR SIMPLE, EFFICIENT SILICON SOLAR CELLS|
Research School of Engineering, The Australian National University
地点：Room 616,Physics Building
For solar cells to work efficiently, it is essential to supress the recombination between electrons and holes, both in the bulk and at the surfaces, and to create regions in the device that transport the two charge carriers towards two separate metallic electrodes. This talk will describe several approaches to implement such passivating technologies on silicon. Firstly, we will have an overview of status in current surface passivating materials and then present the progress in developing novel surface passivating materials at ANU. Secondly, we will discuss self-passivating contacts formed by recrystallising doped silicon films deposited onto thin, tunnelling dielectrics, and also dopant-free selective contacts based on materials having either a very low or very high work function. The latter include metal, metal fluorides and metal oxides. Recent research on deposited-junction silicon solar cells made with such materials will be overviewed.
Dr Yimao Wan received the B.E. degree from the Nanyang Technological University, Singapore in 2004, and Ph.D. degree from the Australian National University (ANU) in 2014, with six years industrial experience in semiconductor manufacturing between 2004 and 2010. He is currently a research fellow at the ANU co-leading the Advanced Interfaces and Materials for Photovoltaics (AIMPV) group and managing the ANU-ARENA industrial projects undersupervision of Prof Andres Cuevas. Since commencement of PhD, Dr Wan has published 34 journals and 17 conference articles on silicon surface passivation and carrier-selective contacts. His research interests lie in particular on the following aspects:
1、novel surface passivation and carrier-selective contact materials
2、high efficiency low cost silicon solar cells and silicon/perovskite tandem solar cells
3、novel materials and devices for photoelectrochemical applications.