多年来，光伏产业一直专注于安装峰值的成本，但现在这一价值观已经开始转变。随着LCOE的重要性被越来越广泛地了解，材料的重要性开始显现。陶氏化学的Brian Habersberger向《光伏杂志》勾勒出目前的市场动态及EVA以外的密封剂在这一价值转变中所起到的作用。
Habersberger认为市场目前已经普遍意识到了组件耐久性的重要性。LCOE可以量化长生命周期和低退化率的价值，其具体细节将会在本周三的webinar中深入探讨。
造成组件功率损耗的常见原因与密封剂有关。制造商通常对价格比较敏感，而EVA由于其成本低廉成为了一种受欢迎的密封材料。但聚烯烃密封剂耐久性更好。一项调查显示，含有聚烯烃材料的组件平均年度损耗率为0.33% ，而传统的EVA组件通常为0.7–0.8% 。另外硅离子基密封剂与聚烯烃产品具有同样的功能，但成本较高。
Brian Habersberger博士是陶氏光伏密封剂和背板材料研发部门的领军人物。他负责管理产品创新中的技术项目、实验室功能和质量等方面。他将参加《光伏杂志》在本周三（11月8日）举行的“耐久性问题”webinar，网址为：https://www.pv-magazine.com/webinars/durability-matters-maximizing-lifetime-minimizing-lcoe-in-pv-modules/。欢迎大家踊跃参加。
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