Temperature profiles induced by a stationary CW laser beam in a multi-layer structure - Application to solar cell interconnect welding
Abstract
A three-dimensional heat transfer model for heating of a multilayer structure by a stationary Gaussian CW CO2 laser beam is developed and applied to solar cell interconnect welding. This model takes into account the temperature dependence of the thermal conductivity and diffusivity as well as free carrier absorption of the incident beam in the silicon where appropriate. Finally, the theoretical temperature profiles are used to determine the weld spot size and these values are compared to results obtained from a simple welding experiment, where excellent agreement is obtained.
- Publication:
-
Applied Physics Communications
- Pub Date:
- 1985
- Bibcode:
- 1985ApPhC...5..113O
- Keywords:
-
- Carbon Dioxide Lasers;
- Continuous Wave Lasers;
- Laser Welding;
- Solar Cells;
- Green'S Functions;
- Heat Transfer;
- Joints (Junctions);
- Silicon;
- Spot Welds;
- Three Dimensional Models;
- Fluid Mechanics and Heat Transfer