Paper by Dr. Nguyen Cong Thanh, a researcher, Energy and Environment Area, has been selected as a journal front cover.
Journal of Materials Research
Cong Thanh Nguyen, Koichi Koyama, Huynh Thi Cam Tu, Keisuke Ohdaira, and Hideki Matsumura
Texture size control by mixing glass microparticles with alkaline solution for crystalline silicon solar cells
In this paper, we show a novel method to obtain small size textures usable in crystalline silicon (c-Si) solar cells. SiO2-based glass microparticles are mixed with a conventional KOH-based alkaline solution for making the textures. Using this mixing method, the texture size can be drastically reduced from 10 to ≤2 µm (0.3-2 µm). In addition, the process time and c-Si loss during the texture formation are reduced from 25 to 2 min and from 20 to 2 µm, respectively. Thus, the process is applicable to c-Si with thickness down to 50 µm. High-quality passivation showing the effective minority carrier lifetimes (τeff) larger than several ms and effective antireflection coating are possible on the new textures. The process is named "microparticle-assisted texturing (MPAT) process", and its features are also demonstrated.
Reference : https://doi.org/10.1557/jmr.2018.151
June 21, 2018