Metal chloride passivation treatments for CdTe solar cells

Autor: John Raguse, Jennifer Drayton, Russell M. Geisthardt, James R. Sites
Rok vydání: 2013
Předmět:
Zdroj: MRS Proceedings. 1538:269-274
ISSN: 1946-4274
0272-9172
DOI: 10.1557/opl.2013.984
Popis: The traditional CdCl2 passivation of CdTe is expanded by adding other chlorides such as MgCl2, NaCl, and MnCl2 into the process through a two-step passivation procedure that combines closed space sublimation step with a vapor process. This allows the possibility of forming a highly doped field at the back of the device that could act as an electron reflector that could boost device performance by directing electrons back into the absorber layer and increasing the voltage while limiting recombination at the back of the device. The effects the two-step passivation process on device performance are characterized by current-voltage measurements, and by electroluminescence and laser-beam induced current images to show the degree of device uniformity. Additionally, capacitance voltage measurements are used to study doping density, depletion width, and possible formation of a field at the back of the device.
Databáze: OpenAIRE
Externí odkaz: