NDLI: AC analysis of temperature effects on conversion efficiency of CuInGaSe2 solar cells

Content Provider	IET Digital Library
Author	Kim, Hong Tak Kim, Chang Duk Kim, Maeng Jun Sohn, Young Soo
Abstract	The temperature effect on a CuInGaSe2 (CIGS) solar cell was investigated in the temperature range −10 to 80°C using direct current (DC) and alternating current (AC) characteristic analysis of CIGS solar cells. The change rates of short-circuit current density (J sc), open-circuit voltage (V oc), fill factor (FF) and efficiency (η) with respect to temperature were investigated. In addition, the variation of impedance, total capacitance and dynamic resistance due to the temperature change implied that the width of the depletion region in a p–n junction shrank, and the effective minority carrier lifetime (τ eff) decreased. Consequently, J sc changed slightly due to the balance between the variation of the energy bandgap (E g) and τ eff. However, V oc linearly decreased due to the relationship of E g when the temperature increased. From these results, it has been concluded that V oc plays an important role in the characteristics of the CIGS solar cell with change of temperature.
Starting Page	86
Ending Page	88
Page Count	3
ISSN	00135194
Volume Number	51
e-ISSN	1350911X
Issue Number	Issue 1, Jan (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/51/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.3257
Journal	Electronics Letters
Publisher Date	2014-12-15
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	AC Analysis Alternating Current Characteristic Analysis Carrier Lifetime CIGS Solar Cell Conversion Efficiency Copper Compounds CuInGaSe2 Current Density Direct Current Characteristic Analysis Dynamic Resistance Energy Bandgap Fill Factor Gallium Compound Indium Compound Minority Carrier Lifetime Minority Carriers Open Circuit Voltage P-n Junction P-n Junctions Photoelectric Conversion Short-circuit Current Short-circuit Current Density Solar Cell And Array Temperature -10 C to 80 C Temperature Effect Ternary SemiConductor
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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