Analytical Modeling of the Dependence of the Open-Circuit Voltage With Temperature in CMOS Photodiodes

The open-circuit voltage is a key parameter determining the harvesting capabilities of diodes operating in photovoltaic regimes. It depends on illumination and temperature which may limit the diode operation in some scenarios. Its dependence on illumination has already been reported. However, the la...

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Bibliographic Details
Published inIEEE transactions on electron devices Vol. 71; no. 3; pp. 1987 - 1993
Main Authors Fernandez-Peramo, Pablo, Lenero-Bardallo, Juan Antonio, Lopez-Martinez, Juan M., Rodriguez-Vazquez, Angel
Format Journal Article
LanguageEnglish
Published New York IEEE 01.03.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Analytical models
CMOS photovoltaic cells
Current density
Diodes
Illumination
Integrated circuit modeling
Lighting
Open circuit voltage
Photodiodes
Photovoltaic cells
self-powered CMOS image sensor (CIS)
Silicon
Solar cells
Temperature dependence
temperature dependency
Voltage
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Summary:The open-circuit voltage is a key parameter determining the harvesting capabilities of diodes operating in photovoltaic regimes. It depends on illumination and temperature which may limit the diode operation in some scenarios. Its dependence on illumination has already been reported. However, the latter has not been studied for diodes integrated into standard IC fabrication technologies. The model was validated with TCAD simulations within a wide operation range. In addition, the model was validated with experimental results. Diodes operating in photovoltaic mode were implemented in two different 180-nm fabrication technologies and characterized. Comparative results show the model qualifies to study how temperature variations can impact the performance of solar cells.
ISSN:0018-9383
1557-9646
DOI:10.1109/TED.2024.3350549