Prof. Barrett G. Potter Profile

Prof. Barrett G. Potter

Professor at Univ of Arizona

SPIE Involvement:

Author

Proceedings Article | 23 August 2017 Paper

Data acquisition and PV module power production in upgraded TEP/AzRISE solar test yard

Whit Bennett, Asher Fishgold, Teh Lai, Barrett Potter, Kelly Simmons-Potter

Proceedings Volume 10370, 103700G (2017) https://doi.org/10.1117/12.2274211

KEYWORDS: Data acquisition, Solar cells, Solar energy, Reliability, Photovoltaics, Analytical research, Sensors, Silicon solar cells, Temperature metrology, Humidity

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Proceedings Article | 23 August 2017 Paper

Image analysis of PV module electroluminescence

T. Lai, C. Ramirez, B. Potter, K. Simmons-Potter

Proceedings Volume 10370, 103700K (2017) https://doi.org/10.1117/12.2274184

KEYWORDS: Image analysis, Solar cells, Electroluminescence, Photovoltaics, Image acquisition, Silicon, Luminescence, Cameras

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Proceedings Article | 23 August 2017 Paper

Comparison of efficiency degradation in polycrystalline-Si and CdTe thin-film PV modules via accelerated lifecycle testing

T. Lai, B. Potter, K. Simmons-Potter

Proceedings Volume 10370, 103700J (2017) https://doi.org/10.1117/12.2274294

KEYWORDS: Solar cells, Thin films, Thin film solar cells, Photovoltaics, Analytical research, Solar energy, Crystals, Energy efficiency, Humidity, Control systems

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Proceedings Article | 26 September 2016 Presentation + Paper

Analysis of twelve-month degradation in three polycrystalline photovoltaic modules

T. Lai, B. Potter, K. Simmons-Potter

Proceedings Volume 9938, 99380O (2016) https://doi.org/10.1117/12.2237527

KEYWORDS: Solar cells, Photovoltaics, Analytical research, Manufacturing, Humidity, Silicon, Lamps, Temperature metrology, Solar energy, Climatology

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Proceedings Article | 26 September 2016 Paper

Modification and upgrade of AzRISE/TEP solar photovoltaic test yard

Whit Bennett, Asher Fishgold, Teh Lai, Teri Elwood, Barrett Potter, Kelly Simmons-Potter

Proceedings Volume 9938, 99380S (2016) https://doi.org/10.1117/12.2238187

KEYWORDS: Photovoltaics, Data backup, Solar energy, Reliability, Solar cells, Data acquisition, Temperature metrology, Data storage, Environmental sensing, Resistors

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Proceedings Article | 24 September 2015 Presentation + Paper

Environmental aging in polycrystalline-Si photovoltaic modules: comparison of chamber-based accelerated degradation studies with field-test data

T. Lai, R. Biggie, A. Brooks, B. Potter, K. Simmons-Potter

Proceedings Volume 9563, 956309 (2015) https://doi.org/10.1117/12.2188696

KEYWORDS: Photovoltaics, Solar cells, Humidity, Lamps, Silicon, Climatology, Optical filters, Solar energy, Temperature metrology, Environmental sensing

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Lifecycle degradation testing of photovoltaic (PV) modules in accelerated-degradation chambers can enable the prediction both of PV performance lifetimes and of return-on-investment for installations of PV systems. With degradation results strongly dependent on chamber test parameters, the validity of such studies relative to fielded, installed PV systems must be determined. In the present work, accelerated aging of a 250 W polycrystalline silicon module is compared to real-time performance degradation in a similar polycrystalline-silicon, fielded, PV technology that has been operating since October 2013. Investigation of environmental aging effects are performed in a full-scale, industrial-standard environmental chamber equipped with single-sun irradiance capability providing illumination uniformity of 98% over a 2 x 1.6 m area. Time-dependent, photovoltaic performance (J-V) is evaluated over a recurring, compressed night-day cycle providing representative local daily solar insolation for the southwestern United States, followed by dark (night) cycling. This cycle is synchronized with thermal and humidity environmental variations that are designed to mimic, as closely as possible, test-yard conditions specific to a 12 month weather profile for a fielded system in Tucson, AZ. Results confirm the impact of environmental conditions on the module long-term performance. While the effects of temperature de-rating can be clearly seen in the data, removal of these effects enables the clear interpretation of module efficiency degradation with time and environmental exposure. With the temperature-dependent effect removed, the normalized efficiency is computed and compared to performance results from another panel of similar technology that has previously experienced identical climate changes in the test yard. Analysis of relative PV module efficiency degradation for the chamber-tested system shows good comparison to the field-tested system with ~2.5% degradation following an equivalent year of testing.

Proceedings Article | 23 September 2015 Paper

Experimental and computational investigation of microcrack behavior under combined environments in monocrystalline Si

W.-J. Huang, S. Bringuier, J. Paul, K. Simmons-Potter, K. Muralidharan, B. Potter

Proceedings Volume 9563, 956308 (2015) https://doi.org/10.1117/12.2188521

KEYWORDS: Silicon, Semiconducting wafers, Atmospheric propagation, Crystals, Micro raman spectroscopy, Systems modeling, Photovoltaics, Temperature metrology, Humidity, Atomic force microscopy

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Proceedings Article | 8 October 2014 Paper

Comparison of environmental degradation in Hanwha 295 W and SunPower 320 W photovoltaic modules via accelerated lifecycle testing

R. Biggie, T. Lai, W.-J. Huang, B. Potter, K. Simmons-Potter

Proceedings Volume 9179, 917908 (2014) https://doi.org/10.1117/12.2062205

KEYWORDS: Solar cells, Humidity, Silicon, Solar energy, Photovoltaics, Lamps, Temperature metrology, Environmental sensing, Manufacturing, Energy conversion efficiency

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Proceedings Article | 8 October 2014 Paper

Combined-environment influence on microcrack evolution in mono-crystalline silicon

W.-J. Huang, Z. Fortuno, M. Li, J. Liu, H. Liao, K. Simmons-Potter, B. Potter

Proceedings Volume 9179, 91790U (2014) https://doi.org/10.1117/12.2062162

KEYWORDS: Silicon, Semiconducting wafers, Humidity, Scanning electron microscopy, Photovoltaics, Solar cells, Performance modeling, Systems modeling, Reliability, Solar energy

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Proceedings Article | 25 September 2013 Paper

Simulation of photovoltaic performance in a thin film, hybrid heterojunction incorporating a nanoscale semiconductor spectral sensitizer

Scott De Valle, Jean Kana Kana, K. Simmons-Potter, B. Potter

Proceedings Volume 8824, 882405 (2013) https://doi.org/10.1117/12.2024210

KEYWORDS: Heterojunctions, Zinc oxide, Nanocomposites, Absorption, Solar cells, Quantum efficiency, Instrument modeling, Photovoltaics, Thin films, Semiconductors

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Proceedings Article | 24 August 2010 Paper

Nanophase semiconductors embedded within transparent conductive oxides matrices as optical sensitizers for photovoltaic applications

C. Allen, G. Shih, R. Beal, B. Potter

Proceedings Volume 7772, 77721L (2010) https://doi.org/10.1117/12.859875

KEYWORDS: Transparent conductors, Germanium, Composites, Zinc oxide, Absorption, Nanocomposites, Semiconductors, Crystals, Photovoltaics, Thin films

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Proceedings Article | 1 September 2006 Paper

Photosensitive polysilane thin films for write-as-needed optical devices

K. Simmons-Potter, B. Potter, G. Jamison, W. Thomes

Proceedings Volume 6287, 628706 (2006) https://doi.org/10.1117/12.683677

KEYWORDS: Refractive index, Absorption, Thin films, Absorbance, Atmospheric optics, Ultraviolet radiation, UV optics, Polymers, Photosensitive materials, Optical components

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Proceedings Article | 23 January 1997 Paper

Investigation of defects in highly photosensitive germanosilicate thin films

Kelly Simmons-Potter, Barrett Potter, W. Warren

Proceedings Volume 2998, (1997) https://doi.org/10.1117/12.264170

KEYWORDS: Germanium, Thin films, Ultraviolet radiation, Absorption, Glasses, Absorbance, Refractive index, UV optics, Oxygen, Data modeling

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Proceedings Article | 23 January 1997 Paper

Structural defect control and photosensitivity in reactively sputtered germanosilicate glass films

Barrett Potter, Kelly Simmons-Potter, W. Warren, Judith Ruffner, Dorothy Meister

Proceedings Volume 2998, (1997) https://doi.org/10.1117/12.264176

KEYWORDS: Glasses, Refractive index, Absorption, Germanium, Oxygen, Raman spectroscopy, UV optics, Picosecond phenomena, Sputter deposition, Thin films

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Showing 5 of 14 publications

Conference Committee Involvement (8)

Optical Components and Materials VII

26 January 2010 | San Francisco, California, United States

Optical Components and Materials VI

26 January 2009 | San Jose, California, United States

Optical Components and Materials V

21 January 2008 | San Jose, California, United States

Optical Components and Materials IV

22 January 2007 | San Jose, California, United States

Optical Components and Materials III

23 January 2006 | San Jose, California, United States

Showing 5 of 8 Conference Committees

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