A Study of the Staebler-Wronski Effect and Amorphous Silicon Solar Cells

Five different solar cell series are tested. Three series of R20-type solar cells are tested, and two series of R0-type solar cells are tested. Each series consists of three different samples of different intrinsic layer thickness – 300 nm, 600 nm, and 900 nm.An analysis of thickness and material dependence is carried out in initial, degraded,...

Development of three dimensional PV structures as shading devices for a Decentralized Facade Unit of the Future.

The first part of the Thesis consists of a research on topics related to Solar Energy, PV technologies and Materials used as part of active solar structures (from the active materials to substrates) as well as their integration in the form of custom shapes. The analysis of these topics reveals the potential of new and emerging PV technologies,...

An Active Switching Circuit for Solar Cells: A circuit that changes the wiring configuration of solar cells to optimise the electrical power output of a solar panel

The electrical output of a solar panel can be optimised in several ways, through the inclusion of bypass diodes (BPDs) or to have a maximum power point (MPP) tracker or DC optimiser to ensure that the panel is always operating at its global MPP. However most of these systems have to be implemented externally to the panel. A new system, the...

Solar Drone

The main goal of this Electrical Engineering Bachelor project is to build a solar-power system for a quad-copter that will extend its battery life or rather its flight time. The complete system is comprised of a PV system (PV), a micro-controller (MC) and a DC/DC converter (DC) which was mounted onto the drone. On each subsystem, a separate...

De verstrooiing van het licht berekend voor het Asahi-U substraat

In dit project is gewerkt aan een manier om de reflectie van het licht op de textuur van een zonnecel te berekenen. Deze reflectie is berekenend voor de verschillende hoeken van inval en uitval en omgezet in een reflectie matrix. In dit<br/>project is verder gewerkt aan een al bestaand wiskundig model. Dat model was<br/>in staat het door de...

Contactless Photovoltaic Cell Power Transfer

One of the main reasons that the efficiency drops from cell to module is the conduction losses. To increase the efficiency of the PV module, the produced charge carriers in the semiconductor materials should be transferred to the PV module terminals with minimum conduction losses. As an alternative to the conventional cells and modules...

Rubidium fluoride post deposition treatment of CIGS for perovskite-CIGS tandem applications

During the last years, large improvements in the efficiency on the CIGS technology have been achieved, making them excellent candidates as bottom cells for double junction tandem devices. This improvement is a result of the implementation of post deposition treatments (PDT) using alkali-metal fluorides. These alkalies prove to enhance the...

Local poly-SiO𝑥 carrier-selective contacts deposited through a hard mask: Simplified fabrication technique for local poly-SiO𝑥 finger formation

Passivating contacts in the front-rear contacted c-Si solar cells enhances the device performance by quenching the contact recombination and enabling sufficient carrier transport. Tunneling oxide passi- vating contact (TOPCon) which consists of an interfacial oxide and a poly-SiO&#x1d465; layer is one of the most promising contact techniques in...

Poly-SiGe in IBC cells