Hole selective contacts for rear surface of c-Ge TPV devices
This work characterizes a technique for creating hole-selective contacts on the rear surface of crystalline germanium thermophotovoltaic cells. The technique consists in creating localized p-type contacts by laser-firing a set of dielectric layers with an aluminium film on top of them. Previous work...
| Autor: | |
|---|---|
| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/400093 |
| Acceso en línea: | https://hdl.handle.net/2117/400093 |
| Access Level: | acceso abierto |
| Palabra clave: | Photovoltaic power generation Germanium Thermophotovoltaics germanium thermophotovoltaic cells laser-fired contacts partially contacted surfaces Energia fotovoltaica--Generació Germani Àrees temàtiques de la UPC::Energies::Energia solar fotovoltaica::Cèl·lules solars |
| Sumario: | This work characterizes a technique for creating hole-selective contacts on the rear surface of crystalline germanium thermophotovoltaic cells. The technique consists in creating localized p-type contacts by laser-firing a set of dielectric layers with an aluminium film on top of them. Previous works by our research group did not include this aluminium layer and obtained poor performance with our infra-red laser due to its excessive power. Because of this, a detailed characterization of the modified approach is performed to find the parameters that lead to the optimal performance. Two common metrics in the creation of local contacts by means of a laser process are used as a reference: contact resistivity and contact surface recombination velocity. In a wider frame, this work contributes to the development of a crystalline germanium cost-efficient technology for thermophotovoltaic cells that could reduce the overall costs of thermophotovoltaic systems and therefore become more widely used. |
|---|