Colorimetry of modules for building-integrated photovoltaic applications
Kemian tekniikan korkeakoulu | Master's thesis
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Functional Materials for Global Challenges
Master's Programme in Advanced Materials for Innovation and Sustainability
AbstractColor characterization of building-integrated photovoltaics (BIPV) devices is essential in design, quality control, and degradation assessment of colored modules. However, the use of traditional instruments is limited by the presence of thick front glazing which causes lateral light displacement and outscattering due to the small port-size of the tools. This master thesis aims at manufacturing an in-house colorimeter with broad-area irradiation and small-area detection to compensate the losses with inscattering gains. The main components for such an equipment are researched and assembled to build a colorimeter with high color identification accuracy (Delta E lower than 2 in respect with a reference). Five sets of colored samples with various glass thicknesses have been used to identify the suitable light source, spectrometer and structural design of the apparatus. Overall, a color identification accuracy, Delta E, of 2-to-3 was obtained on average for all the test samples, demonstrating the capability of the setup especially compared to traditional equipment that are based on small-area irradiation. Future prospects could be focusing on improving the Delta E with more precise CIELab data treatment, and implementing a user-friendly interface with full autonomy of the device to make it completely portable.
Thesis advisorHessler-Wyser, Aïcha
colorimetry, broad-area illumination, product design, building-integrated photovoltaics