EP08.10.02 : Influence of Ag Nanoparticles and Graphene Oxide Concentration on the Properties of FTO/TiO2/PTB7:PC70BM:Ag/MoO3 Device

5:00 PM–7:00 PM Apr 5, 2018 (America - Denver)

PCC North, 300 Level, Exhibit Hall C-E

Guillermo Ivan Garcia Alvarado1 Ramiro Pérez Campos1 Rodrigo Esparza Muñoz1 Beatriz Millán Malo1 Tatiana Román Valenzuela1 Sandra Mayén Hernández2 Francisco deMoure Flores2 Claudia Gutierrez Antonio2 José Santos Cruz2

1, Universidad Nacional Autonoma de Mexico, Queretaro, , Mexico
2, Universidad Autonoma de Queretaro, Queretaro, , Mexico

Polymer hybrid solar cells has been demonstrated that are an excellent candidates for photovoltaic devices, the polymer solar cells were prepared at room temperature by spin coater technique as the type FTO/TiO2/PTB7:PC70BM:Ag/MoO3, the Ag nanoparticle was synthesized by chemical reduction methodology and the graphene oxide was synthesized by the modified Hummers methodology. The PTB7:PC70BM was dissolved in chlorobenzene with the mixture of silver nanoparticles with 0, 0.5, 1, 3 and 5 wt%. and in the other mixture of graphene oxide of 0, 0.5, 1, 3,and 5 wt%. The homogeneous polymer ink was deposited by spin coater technique on soda lime glass substrate and FTO substrates at 400 rpm. The soda lime polymer substrates were characterized by Hall, Uv-Vis TEM, HRTEM and XRD techniques. The FTO substrates were used for make the devices and were characterized in a solar simulator in order to obtained the efficiency. The resistivity values varied as a function of silver nanoparticles concentration, 1x107 to 1x104 W-cm, the carrier concentration 5x1011 to 7 x1011 cm-3. The best efficiency, was for the device with 1 wt% of silver nanoparticles and 1 wt% of graphene oxide.