advanced
Journal Information
Journal Information

   Description
   Editorial Board
   Guide for Authors
   Ordering

Contents Services
Contents Services

   Regular Issues
   Special Issues
   Authors Index

Links
Links

   FEI STU Bratislava    deGruyter-Sciendo

   Feedback

[7s, 2017] 

Journal of Electrical Engineering, Vol 68, 7s (2017) 37-42 DOI: 10.1515/jee-2017-0053

High conversion efficiency of crystalline Si solar cells using black-Si fabricated by SSCT method

Kentaro Imamura – Yuya Onitsuka – Yuya Sakae – Hikaru Kobayashi

   We have developed a technology for fabrication of black-Si by use of the surface structure chemical transfer (SSCT) method. The ultralow reflectance below 3% results from formation of a graded porosity structure of a nanocrystalline Si layer formed by the SSCT method. The nanocrystalline Si layer with an extremely large surface area is effectively passivated by deposition of phosphosilicate glass (PSG) followed by heat treatment at 925°C. After PSG passivation, the minority carrier lifetime greatly increases, and the internal quantum efficiency in the short wavelength region is also greatly increased. Using the SSCT method and the PSG passivation method, the high conversion efficiency of 19.7% is achieved.

Keywords: surface structure chemical transfer, black Si, Si solar cells, surface passivation, reflectance, phosphosilicate glass


[full-paper]


© 1997-2023  FEI STU Bratislava