芬兰的Intelligent Control Systems Ltd. 推出的新型光重定向膜，据说能将异质结（HJT）太阳能电池板发电量提高3.8%。
据制造商称，该专利薄膜被称为Solar Energy Optics（SEO），能够减少异质结太阳能电池边缘区域的损失。公司在一份声明中说：“通过在HJT组件前玻璃的内部应用SEO膜，光线从效率较低的边缘被重新引导到电池的更有效区域。”
该新品暂未上市销售。公司首席执行官Keimo Kalliosaari告诉《光伏》杂志：“我们最新一代SEO膜刚刚进入试生产阶段。”
弗劳恩霍夫太阳能系统研究所（Fraunhofer ISE）在数种面板上测试了这种膜，它们基于两种不同的SEO配置和M6半切HJT太阳能电池，电池间距为1.7毫米，串间距为2毫米。公司明确指出：“测试使用开箱即用的太阳能电池，没有做任何额外修改或分选。”
据Intelligent Control Systems称，测试显示，采用两种不同SEO架构的组件的电力转换效率分别提高了0.66%和0.75%，相当于发电量增加3.3%和3.8%。
该制造商说：“结果显示，将SEO膜应用于具有2毫米电池间隙和白色背板的120或144电池组件，相对效率提升可达2.6%，或两个功率等级。作为对透明双面组件的改进，或替代一些组件制造商目前采用的无间隙解决方案，效率提高可以超过3.5%。”
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