Solar energy conversion with photon-enhanced thermionic emission
نویسندگان
چکیده
منابع مشابه
Solar energy conversion with photon-enhanced thermionic emission
Photon-enhanced thermionic emission (PETE) converts sunlight to electricity with the combined photonic and thermal excitation of charge carriers in a semiconductor, leading to electron emission over a vacuum gap. Theoretical analyses predict conversion efficiency that can match, or even exceed, the efficiency of traditional solar thermal and photovoltaic converters. Several materials have been ...
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Global climate imperatives require a worldwide shift away from greenhouse gasemitting activities such as fossil fuel combustion. Concentrated solar thermal installations are particularly appealing as they can store a fraction of their power in the form of heat to provide baseload power, yet current conversion efficiencies prevent them from reaching competitive market prices. One extremely promi...
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Solar-energy conversion usually takes one of two forms: the 'quantum' approach, which uses the large per-photon energy of solar radiation to excite electrons, as in photovoltaic cells, or the 'thermal' approach, which uses concentrated sunlight as a thermal-energy source to indirectly produce electricity using a heat engine. Here we present a new concept for solar electricity generation, photon...
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Conversion of solar radiation to electricity with Photon-Enhanced Thermionic Emission (PETE) uses both photonic and thermal excitation of charge carriers in a semiconductor. This device includes a semiconductor cathode (which can be composed of several semiconductor materials) illuminated and heated by concentrated sunlight, and a cooler anode, separated by a small vacuum gap. First theoretical...
متن کاملLimit of efficiency for photon-enhanced thermionic emission vs. photovoltaic and thermal conversion
Conversion of sunlight by photon-enhanced thermionic emission (PETE) combines a photonic process similar to photovoltaic cells, and a thermal process similar to conventional thermionic converters. As a result, the upper limit on the conversion efficiency of PETE devices is not the same as the Shockley– Queisser (SQ) limit that corresponds to the bandgap of the absorbing material, nor to the Car...
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ژورنال
عنوان ژورنال: Journal of Optics
سال: 2016
ISSN: 2040-8978,2040-8986
DOI: 10.1088/2040-8978/18/7/073001