Abstract
The performance of a prototype opaque-type colored silicon-based solar cell integrated with liquid crystalline cholesteric layers is investigated. These devices were developed using only organic components and wet processes, without complicated vacuum processes. The evaluated performances of the prototype solar cells were inferior to those of the other types of previously reported colored solar cells because of the inherent limitations of the cholesteric layers, such as the limited reflectance (~50%), narrow color gamut, and viewing angle-dependent color changes. We propose effective strategies for improving the performance of colored solar cell modules integrated with cholesteric layers.
Highlights
Photovoltaic solar cells (SCs) are environment-friendly energy generation devices that have attracted global attention as a solution to environmental issues arising from the use of fossil fuels [1]
For building-integrated photovoltaics (BIPVs) applications, SCs should cover all installable areas on building exteriors, such as windows, rooftops, and facades [6]
Because the colors of building exteriors strongly affect the esthetic and artistic impressions of cities, the color of the SCs is important for BIPV applications [4]
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. SCs such as organic PVs and perovskites can readily tune the absorbance of the photoactive layer These types of SCs have focused applications such as in energy-harvesting windows and glass roofs [7,8,9,10]. We fabricated a prototype version of colored silicon-based SCs by integrating a reflective color layer using liquid crystalline cholesteric (Ch) phases and performed feasibility tests on these devices. These colored SCs were developed using only organic components and wet processes, Crystals 2021, 11, 1336 on these devices. These colored SCs were developed using only organic components and wet processes, and no complicated vacuum process was employed to the previand no complicated vacuum process was employed contrary to thecontrary previously reported ously reported
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