[24p-P10-1~4] 16.3 Bulk, thin-film and other silicon-based solar cells

▲ [24p-P10-4] Developing highly transparent colored reflectors for building-integrated photovoltaics (BIPV)

〇(PC)Zhihao Xu¹, Takuya Matsui¹, Hitoshi Sai¹ (1.AIST)

Keywords:BIPV

Introduction: Building-integrated photovoltaics (BIPV) combines photovoltaics and architecture, converting urban buildings from energy users to energy producers. However, the appearance of standard PV modules is not favorable to be integrated into building skins. Therefore, aesthetic appearance and color control are essential for BIPV application and have led to a growing interest in the development of colored photovoltaic modules. The colored PV modules can be realized by integrating various colored reflectors (CRs). Another important requirement for BIPV is an anti-glare (dazzling) function to mitigate the specular reflection of the sun light. Therefore, surface texturing of BIPV modules is preferable for this purpose. In this study, we fabricate CRs based on the optical interference effect of dielectric multilayers with high and low refractive index materials, which is similar to butterfly’s wings. The color is tuned by modifying the configuration (thickness and refractive indices) of dielectric multilayers. We apply this technology to textured glass substrates for developing highly transparent CRs with aesthetic appearance.