Seminario de Ingeniería de Materiales FIME-UANL - Submission (26-09-2019 10:41:27)

Seminario de Ingeniería de Materiales FIME-UANL - Submission (26-09-2019 10:41:27)

26/09/2019

Lugar : Auditorios: Ing. René Mario Montante / Dr. Raúl G. Quintero Flores

Fecha : 10/11/2019 17:00

Expositor : AISWARYA NADUKKANDY

Asesor : Dr. Bindu Krishnan

Co-Asesor :

Moderador :

Título de la conferencia : Cu ALLOYED SILVER ANTIMONY SULFOSELENIDE (Cu,Ag)Sb(S,Se)2 THIN FILMS FOR PHOTOVOLTAIC APPLICATIONS

Resumen : A solar cell or photovoltaic cell is an electrical device that converts light energy directly in to electrical energy. Solar cells have recently made significant commercialisation and are on the track towards meeting more than 1% of global energy demand. Current PV market is dominated by Si based solar cells. However, the main disadvantages of Si based solar cells are high cost of production. This leads to the investigation of cost effective thin film photovoltaic materials, CIGS and CdTe are the most widely used thin film solar cells, but the major issues of toxicity of cadmium and scarcity of indium, gallium and tellurium remain as concerns. In the present thesis, I will work on developing copper alloyed silver antimony sulfo-selenide (AgSb(S,Se)2 )thin films, which is one of the emerging photovoltaic materials, due to non toxic and earth abundant elements and also good photovoltaic properties. First, AgSb(S,Se)2 thin films will be prepared by combining the methods of thermal evaporation and chemical bath deposition. Further, the films formed at different conditions will be incorporated to solar cells using CdS as window layers. The effect of Cu alloying will be studied for the (AgSb(S,Se)2 with the best PV properties. Detailed studies of compositional variation on the film growth and their photovoltaic properties will be performed. Also, theoretical analysis is planned for the crystallographic characteristics of the films. The films and devices formed at different conditions will be characterized using various techniques: X-ray diffraction, scanning electron microscope, X-ray photoelectron spectroscopy, UV-Vis-IR transmittance spectroscopy. In the seminar I will be presenting some of the results achieved so far in my work.

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Title of the conference : Cu ALLOYED SILVER ANTIMONY SULFOSELENIDE (Cu,Ag)Sb(S,Se)2 THIN FILMS FOR PHOTOVOLTAIC APPLICATIONS

Summary : A solar cell or photovoltaic cell is an electrical device that converts light energy directly in to electrical energy. Solar cells have recently made significant commercialisation and are on the track towards meeting more than 1% of global energy demand. Current PV market is dominated by Si based solar cells. However, the main disadvantages of Si based solar cells are high cost of production. This leads to the investigation of cost effective thin film photovoltaic materials, CIGS and CdTe are the most widely used thin film solar cells, but the major issues of toxicity of cadmium and scarcity of indium, gallium and tellurium remain as concerns. In the present thesis, I will work on developing copper alloyed silver antimony sulfo-selenide (AgSb(S,Se)2 )thin films, which is one of the emerging photovoltaic materials, due to non toxic and earth abundant elements and also good photovoltaic properties. First, AgSb(S,Se)2 thin films will be prepared by combining the methods of thermal evaporation and chemical bath deposition. Further, the films formed at different conditions will be incorporated to solar cells using CdS as window layers. The effect of Cu alloying will be studied for the (AgSb(S,Se)2 with the best PV properties. Detailed studies of compositional variation on the film growth and their photovoltaic properties will be performed. Also, theoretical analysis is planned for the crystallographic characteristics of the films. The films and devices formed at different conditions will be characterized using various techniques: X-ray diffraction, scanning electron microscope, X-ray photoelectron spectroscopy, UV-Vis-IR transmittance spectroscopy. In the seminar I will be presenting some of the results achieved so far in my work.