Open-circuit voltage of N/sup +/-N-P high-low-emitter (HLE) junction solar cells in concentrated sunlight

Journal Article · Mon Dec 31 23:00:00 EST 1979 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.327345· OSTI ID:5598775

Shen, W; Wu, C

Simple analytical expression for the open-circuit voltage of a n/sup +/-n-p (p/sup +/-p-n) high-low-emitter (HLE) junction solar cell, which is valid for both the low and high levels of optical illuminations, is presented. Based on the principle of superposition, the open-circuit voltage of a n/sup +/-n-p high-low-emitter junction solar cell is expressed in terms of the short-circuit current density and the known saturated dark current. Effects of the high-low junction, the energy-gap shrinkage, and the dimensions of the HLE junction solar cell on the open-circuit voltage are included. The numerical results of the derived expression are found to be in good agreements with the exact numerical analysis of Sah et al. The optimal design considerations based on the known characteristics of the open-circuit voltage are also discussed.

• Research Organization: Semiconductor Research Center and Institute of Electronics, National Chiao-Tung University, Hsin-Chu, Taiwan, Republic of China
• OSTI ID: 5598775
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 51:1; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
CURRENT DENSITY
DATA
DIRECT ENERGY CONVERTERS
ELECTRIC POTENTIAL
ELECTRICAL FAULTS
ELECTROMAGNETIC RADIATION
ENERGY GAP
INFORMATION
JUNCTIONS
MATHEMATICAL MODELS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
RADIATIONS
SOLAR CELLS
VISIBLE RADIATION