ANGULAR SOLAR ABSORPTIVITY OF NANOSTRUCTURED HYBRID PEROVSKITE SOLAR CELLS

• Main Author: NU’MAN AL FARISI , MUHAMMAD
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/87159
• Institution: Institut Teknologi Bandung

Perovskite solar cells (PSCs) are considered plausible alternatives to conventional silicon solar cells due to their cheap cost and comparable performance. However, stability issues remain a challenge in the commercialization of perovskite solar cells. Glass protective layers are usually employed to encapsulate perovskite solar cells and protect the perovskite layer from environmental factors. Glass encapsulation also presents an opportunity to improve the performance of perovskite solar cells. A recent study suggested that implementing nanocones on top of the glass-protecting layer of a PSC will improve its total absorbed irradiance by around 3% compared to planar cells. However, the study used polarized light under a normal ray, and the effects caused by the Sun’s movement on the nanostructured PSC are unknown. This research analyzed the performance of various architectures of glass nanostructures, namely planar, nanocone, nanopyramid, nanotube, and nanorod, on hybrid perovskite solar cells when exposed to various light incidence angles and polarization using the finite-element method in the three-dimensional domain. The results show that the perovskite solar cells absorb more P-polarized light than S-polarized light at higher zenith angles, especially around 60° zenith angle, which agrees with Brewster’s angle. Moreover, most of the nanostructured PSC models exhibit a lower dependence on zenith angles than the planar PSC model, with the nanocone, nanotube, and nanorod architecture absorbing 5.4%, 4.2%, and 3.8% more light than the planar model, respectively. The nanopyramid architecture also has a low zenith angle dependence compared to the planar model but is heavily dependent on the light azimuth angle. The higher light absorption capability of nanostructured perovskite solar cells is related to the presence of constructive interferences inside the perovskite solar cell induced by the nanostructures. We also studied the daily insolation value of each PSC model using a mathematical model involving the simulation data and the Sun's position at the equator on the day of the vernal equinox. All of the nanostructured shapes had a higher hourly absorbed irradiance compared to the planar model, with the nanocone architecture providing the highest increase in daily absorbed insolation, around 3.74% higher than the daily absorbed insolation value of the planar model.