The application of interface selection and passivation to high efficiency PEDOT:PSS/Si hybrid solar cells
Journal
2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017
Pages
1-3
Date Issued
2017
Author(s)
Abstract
Over one fourth of all monocrystalline silicon ingots suffer from a 20% performance degradation due to oxygen precipitates. Tabula Rasa (TR) is a mitigation technique that dissolves these precipitates, making them harmless. This work explores the dependence of oxygen dissolution on annealing time and temperature for the TR process to aid in solar cell process optimization. The dissolution time for oxygen precipitates was found to be more than 10 minutes for total dissolution, longer than normal TR process times in the electronics industry. The activation energy, extracted from the precipitate dissolution curves, is found to be 2.6±0.5 eV. This value when compared to the migration enthalpy of oxygen in silicon can be used to reveal the energy limiting proces in TR.
SDGs
Type
conference paper