NDLI: Evaluation of Carrier Collection Efficiency in Multiple Quantum Well Solar Cells

Content Provider	IEEE Xplore Digital Library
Author	Fujii, H. Toprasertpong, K. Watanabe, K. Sugiyama, M. Nakano, Y.
Copyright Year	2011
Abstract	The carrier collection efficiency (CCE) is proposed as an effective parameter for indicating the efficiency of carrier transport in quantum nanostructured solar cells. The CCE can be estimated by normalizing the illumination-induced current enhancement to its saturation value at reverse bias. The derivation procedure for the CCE is experimentally validated by examining the bias-dependence of light absorption, and by investigating the balance between the absorbed photons and collected carriers at reverse bias. The effect of AM1.5 bias-illumination for CCE characterization was also investigated and found to be significant for more accurate evaluation of carrier dynamics during actual device operation under sunlight. Furthermore, simulation of the resistance effects showed that a large series resistance leads to underestimation of the CCE at forward bias whereas a shunt resistance has only a slight influence on the CCE calculation.
Starting Page	237
Ending Page	243
Page Count	7
File Size	3547137
File Format	PDF
ISSN	21563381
Volume Number	4
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resistance Lighting Quantum well devices Absorption Gallium arsenide Photovoltaic cells Photonics III–V semiconductor material photovoltaic cells quantum well devices
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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