NDLI: Examination of the mid-gap unit cell absorber and P/I interface properties needed for 15% a-SiC:H/a-Si:H/a-SiGe:H multi-junction cells: numerical modeling study

Content Provider	IEEE Xplore Digital Library
Author	Jingya Hou Suntharalingam, V. Sanghoon Bae Fonash, S.J.
Copyright Year	1993
Description	Author affiliation: Electron. Mater. & Process. Res. Lab., Pennsylvania State Univ., University Park, PA, USA (Jingya Hou; Suntharalingam, V.; Sanghoon Bae; Fonash, S.J.)
Abstract	The authors have performed numerical modeling of the high-band gap, mid-band gap, and low-band gap unit cells of a-SiC:H/a-Si:H/a-SiGe:H triple junction solar cell structures. This report focuses on the mid-band gap unit cell of these structures and examines the effect of the i-layer quality and the p-i interface on this unit cell's performance. The purpose of this study is to determine reasonable performance goals for the a-Si:H mid gap unit cell of a 15% efficient multijunction structure as well as to prioritize the effect of certain material parameters. The authors find that when optimizing the cell by reducing recombination, the defect density in the absorber layer, not the p/i interface layer, is the key to improving cell efficiency. Further, of the three components of the efficiency (J/sub SC/, V/sub OC/, and the fill factor), improvements in the efficiency, due to reduced recombination, are more readily gained by increasing the fill factor than by trying to raise the open circuit voltage.
Starting Page	1021
Ending Page	1025
File Size	299947
Page Count	5
File Format	PDF
ISBN	0780312201
DOI	10.1109/PVSC.1993.346985
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photonic band gap Poisson equations Numerical models Difference equations Nonlinear equations Laboratories Circuits Voltage Photovoltaic systems Solar power generation
Content Type	Text
Resource Type	Article

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