Dr. Teh Lai Profile

Dr. Teh Lai

Student at U of Arizona

SPIE Involvement:

Author

Publications (8)

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

Proceedings Article | 26 September 2016 Paper

In-situ comparison of thermal measurement technologies for interpretation of PV module temperature de-rating effects

Teri Elwood, Whit Bennett, Teh Lai, Kelly Simmons-Potter

Proceedings Volume 9938, 99380Q (2016) https://doi.org/10.1117/12.2237934

KEYWORDS: Temperature metrology, Solar cells, Photovoltaics, Environmental sensing, Measurement devices, Sensors, Thermal energy technology, Temperature sensors, Energy conversion efficiency, Resistance

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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 | 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

Read Abstract +

Showing 5 of 8 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years