University of Pennsylvania

Drexel University

Peter K Davies

Jonathan Eli Spanier

Andrew Marshall Rappe

Ilya Grinberg

Alan T Johnson

Wayne L Worrell

Dawn A Bonnell

Don Vincent West

Douglas Robert Strachan

Liyan Wu

Danvers E Johnston

Andrei R Akbasheu

Beth S Guiton

A method of growing a FE material thin film using physical vapor deposition by pulsed laser deposition or RF sputtering is disclosed. The method involves creating a target to be used for the pulsed laser deposition in order to create a KBNNO thin film. The resultant KBNNO thin film is able to be used in photovoltaic cells.

Method for making ferroelectric material thin films

Disclosed herein are ferroelectric perovskites characterized as having a band gap, Egap, of less than 2.5 eV. Also disclosed are compounds comprising a solid solution of KNbO3 and BaNi1/2Nb1/2O3-delta, wherein delta is in the range of from 0 to about 1. The specification also discloses photovoltaic devices comprising one or more solar absorbing layers, wherein at least one of the solar absorbing layers comprises a semiconducting ferroelectric layer. Finally, this patent application provides solar cell, comprising: a heterojunction of n- and p-type semiconductors characterized as comprising an interface layer disposed between the n- and p-type semiconductors, the interface layer comprising a semiconducting ferroelectric absorber layer capable of enhancing light absorption and carrier separation.

Semiconductor ferroelectric compositions and their use in photovoltaic devices

Disclosed are devices comprising multiple nanogaps having a separation of less than about 5 nm. Also disclosed are methods for fabricating these devices.

Parallel fabrication of nanogaps and devices thereof

Single-component bodies useful in fuel cells and other electrochemical devices are provided. In preferred embodiments, the single-component bodies comprise an anodic region at a first side, a cathodic region at a second, non-adjacent side, and an oxygen ion-conducting region substantially free from anodic or cathodic character disposed between said anodic and cathodic regions. The single-component bodies comprise either transition metal perovskites or oxide electrolytes such as yttria-stabilized zirconia doped with multivalent cations.

Electrochemical devices based on single-component solid oxide bodies

Growing community of inventors

Newtown, PA, United States of America

Peter K Davies