Patent ID: 6762508
Filing Date: 2004-07-13
Classification: B32B,H01L,Y02E

Abstract:
A photovoltaic element encapsulated in a stack structure with a front surface member, a front surface encapsulant resin, a back surface encapsulant resin, and a back surface member in an order of the front surface member, the front surface encapsulant resin, the photovoltaic element, the back surface encapsulant resin, and the back surface member, wherein the front surface encapsulant resin comprises a hot-melt polymer resin having an ultraviolet absorbing agent dissolved therein, wherein the dissolved ultraviolet absorbing agent has a concentration gradient in the direction of thickness of the encapsulant resin, andwherein the concentration of the ultraviolet absorbing agent is higher at a location near a light incident surface of the front surface encapsulant resin.