Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Nuclear Engineering
Water-Soluble Polythiophene∕Nanocrystalline Tio2 Solar Cells, Qiquan Qiao, James T. Mcleskey Jr.
Water-Soluble Polythiophene∕Nanocrystalline Tio2 Solar Cells, Qiquan Qiao, James T. Mcleskey Jr.
Mechanical and Nuclear Engineering Publications
We report the characteristics of polymer∕nanocrystalline solar cells fabricated using an environmentally friendly water-soluble polythiophene and TiO2 in a bilayer configuration. The cells were made by dropping the polymer onto a TiO2nanocrystallinefilm and then repeatedly sweeping a clean glass rod across the polymer as it dried. The devices showed an open circuit voltage of 0.81 V, a short circuit current density of 0.35mA/cm2, a fill factor of 0.4, and an energy conversion efficiency of 0.13%. The water-soluble polythiophene showed significant photovoltaic behavior and the potential for use in solar cells.
Characteristics Of Water-Soluble Polythiophene: Tio2 Composite And Its Application In Photovoltaics, Qiquan Qiao, Lianyong Su, James Beck, James T. Mcleskey Jr.
Characteristics Of Water-Soluble Polythiophene: Tio2 Composite And Its Application In Photovoltaics, Qiquan Qiao, Lianyong Su, James Beck, James T. Mcleskey Jr.
Mechanical and Nuclear Engineering Publications
We have studied the characteristics of composites of an environmentally friendly water-soluble polythiophene sodium poly[2-(3-thienyl)-ethoxy-4-butylsulfonate] (PTEBS) and TiO2. We observed that the ultraviolet-visible absorption spectrum of low molecular weight PTEBS is redshifted possibly due to the formation of aggregates. Cyclic voltammetry reveals the values of highest occupied molecular orbitals and lowest unoccupied molecular orbitals for PTEBS. A factor of 7 in photoluminescence quenching indicates that the exciton dissociation and charge separation occur successfully at the PTEBS: TiO2 (1:1 by weight) interface. This enhances the possibility that the separated charges will reach the electrodes before recombining. Scanning electron micrograph images show …