Color Tuning of Halide Perovskite Solar Cells for Indoor Light Applications

In the past decade, Perovskite solar cells have attracted widespread interest due to
their rapidly increasing power conversion efficiency (PCE) and their low cost and simple
fabrication techniques. The majority of the spectrum of interior light, unlike AM 1.5G light, is
concentrated in the visible region. As an efficient indoor light source, fluorescent bulbs or light
emitting diodes (LEDs) with wavelengths ranging from 400 to 700 nm have been suggested.
Although the most studied, MAPbI3 solar cells have achieved excellent efficiency; however, their
dark brown color and poor stability render them unsuitable for color display units, buildingintegrated photovoltaics, and indoor applications. In this project, the crystal structure,
morphology, and band gap of halide perovskite-based materials for indoor photovoltaics with
low incident light intensities were experimentally investigated. Using photoluminescence, the Tuac plot, and UV-visible spectra, their respective band gap and average visible light transmission (AVT) were investigated and experimentally tested. Then, the synthesized perovskite compositions with the highest light absorption in the visible spectral region, which are suitable for indoor lighting solar cells, were used to fabricate perovskite solar cells for indoor applications. For current density- voltage measurements under indoor light setting with different intensities of 200, 400, and 800 lux will be used. Other parameters, including average visible light transmission (AVT) and matching color coordinates on a CIE1931 color diagram, should also be considered for real-world applications, despite the fact that high PCEs play an important role in indoor light harvesting applications due to their ability to absorb a suitable wavelength.