Journal article
Power conversion efficiency exceeding the Shockley-Queisser limit in a ferroelectric insulator
Nature photonics, v 10(9), pp 611-616
01 Sep 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Ferroelectric absorbers, which promote carrier separation and exhibit above-gap photovoltages, are attractive candidates for constructing efficient solar cells. Using the ferroelectric insulator BaTiO3 we show how photogeneration and the collection of hot, non-equilibrium electrons through the bulk photovoltaic effect (BPVE) yields a greater-than-unity quantum efficiency. Despite absorbing less than a tenth of the solar spectrum, the power conversion efficiency of the BPVE device under 1 sun illumination exceeds the Shockley-Queisser limit for a material of this bandgap. We present data for devices that feature a single-tip electrode contact and an array with 24 tips (total planar area of 1 x 1 mu m(2)) capable of generating a current density of 17 mA cm(-2) under illumination of AM1.5 G. In summary, the BPVE at the nanoscale provides an exciting new route for obtaining high-efficiency photovoltaic solar energy conversion.
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Details
- Title
- Power conversion efficiency exceeding the Shockley-Queisser limit in a ferroelectric insulator
- Creators
- Jonathan E. Spanier - Drexel UniversityVladimir M. Fridkin - Drexel UniversityAndrew M. Rappe - University of PennsylvaniaAndrew R. Akbashev - Drexel UniversityAlessia Polemi - Drexel UniversityYubo Qi - University of PennsylvaniaZongquan Gu - Drexel UniversitySteve M. Young - United States Naval Research LaboratoryChristopher J. Hawley - Drexel UniversityDominic Imbrenda - Drexel UniversityGeoffrey Xiao - Drexel UniversityAndrew L. Bennett-Jackson - Drexel UniversityCraig L. Johnson - Drexel University
- Publication Details
- Nature photonics, v 10(9), pp 611-616
- Publisher
- Springer Nature
- Number of pages
- 6
- Grant note
- Semiconductor Research Corporation under Nanoelectronics DMR 0722845 / National Science Foundation; National Science Foundation (NSF) DMR 1124696 / Semiconductor Research Corporation under Beyond Program W911NF-14-1-0500 / US Army Research Office DE-FG02-07ER46431 / Department of Energy; United States Department of Energy (DOE) N00014-14-1-0761 / Office of Naval Research National Research Council Research Associateship Award at the US Naval Research Laboratory 1124696 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Office of Research (and Innovation); Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000382800500016
- Scopus ID
- 2-s2.0-84981244714
- Other Identifier
- 991019168396604721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Optics
- Physics, Applied