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Título del libro: The Role Of Structural And Chemical Properties In Pm-Si:H Thin Films To Determine The Optoelectronic Characteristics And Stability By Soaking Light For Applications In Solar Cell

Autores UNAM:
CARLOS ALVAREZ MACIAS; GUILLERMO SANTANA RODRIGUEZ;
Autores externos:

Idioma:
Inglés
Año de publicación:
2015
Palabras clave:

Polymorphous Silicon; Solar Cell; Photoconductivity


Resumen:

We examine the role of structural and chemical properties of Hydrogenated polymorphous Silicon, Pm-Si: H, thin films on the optoelectronic characteristics and the level of stability under prolonged white light exposure at 100 mw/cm(2) (AM1.5 condition), for applications in solar cells. These thin films were grown by Plasma Enhance Chemical Vapor Deposition (PECVD) using diclhorolsilane (SiH2Cl2), instead of silane (SiH4) as precursor gas, at different hydrogen dilutions (D-H). The nano-structural properties were confirmed by Raman measurements. The films compositions were determined by XPS measurements. From FTIR analysis we notice bonding configurations associated to photo-stability. Light soaking experiments during 250h show important behaviors on the electronic transport properties measurements to different levels of incorporated oxygen.


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