Hybrid Si microwire and planar solar cells: passivation and characterization

Dong Rip Kim; Chi Hwan Lee; Pratap Mahesh Rao; In Sun Cho; Xiaolin Zheng

doi:10.1021/nl2009636

Hybrid Si microwire and planar solar cells: passivation and characterization

Nano Lett. 2011 Jul 13;11(7):2704-8. doi: 10.1021/nl2009636. Epub 2011 May 24.

Authors

Dong Rip Kim¹, Chi Hwan Lee, Pratap Mahesh Rao, In Sun Cho, Xiaolin Zheng

Affiliation

¹ Department of Mechanical Engineering, Stanford University, Stanford, California 94305, United States.

PMID: 21609002
DOI: 10.1021/nl2009636

Abstract

We report an efficient hybrid Si microwire (radial junction) and planar solar cell with a maximum efficiency of 11.0% under AM 1.5G illumination. The maximum efficiency of the hybrid cell is improved from 7.2% to 11.0% by passivating the top surface and p-n junction with thin a-SiN:H and intrinsic poly-Si films, respectively, and is higher than that of planar cells of the identical layers due to increased light absorption and improved charge-carrier collections in both wires and planar components.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Electric Power Supplies*
Nanotechnology
Particle Size
Silicon / chemistry*
Solar Energy*
Surface Properties

Substances

Silicon