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Electrical and Computer Engineering

University of Kentucky

Electrical and Computer Engineering Faculty Publications

2015

Articles 1 - 2 of 2

Full-Text Articles in Engineering

Nanowire Cds-Cdte Solar Cells With Molybdenum Oxide As Contact, Hongmei Dang, Vijay P. Singh Oct 2015

Nanowire Cds-Cdte Solar Cells With Molybdenum Oxide As Contact, Hongmei Dang, Vijay P. Singh

Electrical and Computer Engineering Faculty Publications

Using a 10 nm thick molybdenum oxide (MoO3-x) layer as a transparent and low barrier contact to p-CdTe, we demonstrate nanowire CdS-CdTe solar cells with a power conversion efficiency of 11% under front side illumination. Annealing the as-deposited MoO3 film in N2 resulted in a reduction of the cell's series resistance, from 9.97 Ω/cm2 to 7.69 Ω/cm2, and increase in efficiency from 9.9% to 11%. Under illumination from the back, the MoO3-x/Au side, the nanowire solar cells yielded Jsc of 21 mA/cm2 and efficiency of 8.67%. Our results demonstrate …


Frameless Representation And Manipulation Of Image Data, Henry G. Dietz Mar 2015

Frameless Representation And Manipulation Of Image Data, Henry G. Dietz

Electrical and Computer Engineering Faculty Publications

Most image sensors mimic film, integrating light during an exposure interval and then reading the "latent" image as a complete frame. In contrast, frameless image capture attempts to construct a continuous waveform for each sensel describing how the Ev (exposure value required at each pixel) changes over time. This allows great flexibility in computationally extracting frames after exposure. An overview of how this could be accomplished was presented at EI2014, with an emphasis on frameless sensor technology. In contrast, the current work centers on deriving frameless data from sequences of conventionally captured frames.