First principle analyses of direct bandgap solar cells with absorbing substrates versus mirrors

Wide Bandgap Composite EBG Substrates

High-K ceramics are embedded into a polymer host to create an electromagnetic bandgap (EBG) substrate that possess superior properties to previous bandgap implementations in terms of stopband width, attenuation per layer, and practicality. Ceramics are periodically spaced in a commercially-available, Teflon-based host to create a bandgap that spans from 12.1 to 24.1 GHz. Miniature dielectric ro...

Stability of Dye Solar Cells with Photoelectrode on Metal Substrates

Rights: © 2010 The Electrochemical Society. This is the post print version of the following article: Miettunen, Kati & Ruan, Xiaoli & Saukkonen, Tapio & Halme, Janne & Toivola, Minna & Guangsheng, Huang & Lund, Peter. 2010. Stability of Dye Solar Cells with Photoelectrode on Metal Substrates. Journal of The Electrochemical Society. Volume 157, Issue 6. B814-B819. ISSN 0013-4651 (printed). DOI: ...

Highly absorbing solar cells--a survey of plasmonic nanostructures.

Plasmonic light trapping in thin film solar cells is investigated using full-wave electromagnetic simulations. Light absorption in the semiconductor layer with three standard plasmonic solar cell geometries is compared to absorption in a flat layer. We identify near-field absorption enhancement due to the excitation of localized surface plasmons but find that it is not necessary for strong ligh...

Enhanced conversion efficiency in wide-bandgap GaNP solar cells

Sub-bandgap absorption in organic solar cells: experiment and theory.

Most high-performance organic solar cells involve bulk-heterojunctions in order to increase the active donor-acceptor interface area. The power conversion efficiency depends critically on the nano-morphology of the blend and the interface. Spectroscopy of the sub-bandgap region, i.e., below the bulk absorption of the individual components, provides unique opportunities to study interface-relate...