Speaker:Jack Li（李陶）

Jack Li, Technical Director in JA Solar Hefei Plant, studied Polymer Marital at Sichuan University.Subsequently, he   spent almost two years on the   research of UV curing adhesive formula and develping encapsulant processing for thin film solar modules. Then, He joined 3M China working on the polymer   material development and application researches for PV modules, which included encapsulant, backsheet, AR coating and light redirection film. Presently Mr. Li is responsible for enhancing the reliability of JA’s products within a reasonable costs. Under this commission, He and his team devoted themselves to providing PV modules with stable quality and excellent performance to customers without extra cost.

PPIC Presentation topic:

The History of Encapsulant Material and Technical Trends on PV Modules 

Abstract: 

Since Jet Propulsion Laboratory completed a famous project, Flat-Plate Solar Array Project, in 1986, EVA has stood out as a dominator in encapsulant for silicon PV module for over 30 years. In this presentation, we first present the requirements of PV encapsulant material. 

Then, reliability problems and some common processing issues of EVA were summarized and explained, including field aging performance such as delamination, light degradation and corrosion. Also the occurrence reason for un-fusion, bubble and light stock issues in lamination processing are analyzed. Primarily, we describe the technical trends of PV encapsulant about light management, thermal conductive and lamination improvement. In this part, two familiar concepts, white EVA and light converting material, are analyzed. 

Moreover, we introduce the radiative cooling and graded refractive index as new encapsulated methods. At the same time, mass production feasibility of these trends has been involved in this discussion briefly.