Abstracts Book - IMRC 2018

• SC4-P073
Blue CdTe surface obtained by CdCl2 thermal treatment and their
performance on CdTe solar cell
Cesar Hernandez Vasquez 1 , María de Lourdes Albor Aguilera 1 , Miguel Angel González Trujillo 2 ,
Jose Manuel Flores Marquez 3 , Salvador Gallardo Hernandez 4
1
Instituto Politécnico Nacional - IPN, Física, Mexico. 2 Instituto Politécnico Nacional - IPN,
Formación básica, Mexico. 3 Instituto Politécnico Nacional - IPN, Ing. en Metalurgia y Materiales,
Mexico. 4 Centro de Investigación y de Estudios Avanzados del IPN - CINVESTAV, Física, Mexico.
CdTe surface was thermally treated in CdCl2 obtaining a blue CdTe surface. Cl
migration along the CdTe solar cell structure, reduce the defects between CdS
and CdTe thin films and show a good recrystallization, helping to the carriers
mobility along the structure and as a consequence the reduction of the CdTe
resistivity. This study was carried out the presence of TeOx on CdTe surface.
Using SIMS profiling of CdTe devices, XPS, SEM-EDS and J-V measurements.
These analyses confirm the presence of Cd, Cl, S and Te on surface and shown
a close correlation between the quality of interfaces and its photovoltaic
efficiency about 12% was determined by employing a solar simulator AAA.
Acknowledgment:
This work was supported by the Project P25 CeMIE-SOL SENER and SIP projects
20180398, 20180439
Keywords: Blue CdTe surface, CdCl2 treatment, Photovoltaic performance
Presenting authors email: chernandezex@gmail.com