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Chromaticity and Optical Characteristics of RF Magnetron-Sputtered Colored Glass for BIPV Applications
Seungcheol Yoo1, Junghyun Kim2, Wonseok Choi1
1Department of Electrical Engineering, Hanbat National University, Daejeon 34158, Republic of Korea.
Nanomaterials (Basel, Switzerland)
|July 27, 2026
Summary
Researchers developed colored glass for building-integrated photovoltaics (BIPV) using various ceramic targets. Material choice significantly influenced color and optical properties, guiding future BIPV glass design.
Area of Science:
- Materials Science
- Optoelectronics
- Thin Film Technology
Background:
- Building-integrated photovoltaics (BIPV) demand front-glass materials balancing aesthetics and function.
- Current BIPV applications require advancements in customizable and efficient glass solutions.
Purpose of the Study:
- To fabricate and comparatively evaluate colored glass using various ceramic targets for BIPV applications.
- To analyze the optical, electrical, and colorimetric properties of coated glass samples.
Main Methods:
- Fabrication of colored glass on indium tin oxide (ITO)-coated substrates via Radio-Frequency (RF) magnetron sputtering.
- Utilized ceramic targets: metal oxides (MoO3, WO3, SiO2), TiN, and Si.
- Evaluated optical transmittance, sheet resistance, and colorimetric properties using CIELAB and CIE 1931 coordinates.
Main Results:
- Coated samples produced red, yellow, and blue color families.
- Color characteristics showed material-dependent trajectories: oxides shifted towards yellow, TiN towards blue.
- Si-based coatings demonstrated high optical transparency in the photovoltaic spectrum.
Conclusions:
- Observed color variations correlate with thin-film interference and material optical properties.
- Provides a framework for color realization analysis in BIPV glass.
- Offers practical guidance for material selection in colored BIPV glass development.

