BT Hamzavy, Southern Research Institute, Birmingham, AL 35211 USA
Abstract
The electrical performance of a 4.0 kW mono crystalline modules is characterized in terms of encapsulant transmission and fluorescence. These modules have been installed in a grid-connected service environment since 2009 in the Southeastern US. I-V (current-voltage) assessments are done indoors using a Pasan solar simulator under controlled environment. A detailed analysis of the electroluminescent images is presented. Assessments of cell damage and impact on electrical performance change in Isc (short circuit current), IPmax (current @ max power) and Pmax against the manufacturer name plate are made. Encapsulant fluorescence is measured in cell area in the module and compared to the no cell area. Module is cored to examine various interfaces in the laminate and results reported.
… light. This phenomenon is also known as Stokes scattering [4]. We examined the module from the sunny-side using a LED UV light source and a StellarNet spectrophotometer using an optical fiber as shown in Figure 10. We
