Micron-gap ThermoPhotoVoltaics (MTPV)

DiMatteo, R. S.

doi:10.1063/1.1841878

Cited by 40 publications

(33 citation statements)

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“…The values for TPV are experimental results from [8] while those for the quantum-coupled case is from our calculations described in later chapters. There is not an efficiency figure reported in [4] for MTPV.…”

mentioning

confidence: 93%

Quantum-coupled single-electron thermal to electric conversion scheme

Hagelstein

Chen

et al. 2009

Journal of Applied Physics

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A new thermal to electric conversion scheme based on an excitation transfer and tunneling mechanism is studied theoretically. Coulomb coupling dominates when the hot side and the cold side are very close. Two important concepts went into the device scheme: (1) Coulomb coupling, to try to increase throughput power (which is not subject to blackbody limit), and (2) a quantum dot implementation, to restrict number of states, to try to increase efficiency. Modeling efforts from Bloch equations, brute force numerical simulations, and the secular equations partitioning method are discussed. A hot-side quantum dot design of the device is considered. Alternative implementation where the hot-side is a plain sheet of metal or aluminum oxide is analyzed. We found that the model power/area is higher than the blackbody limit, and the predicted conversion efficiency is very high.

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confidence: 93%

Quantum-coupled single-electron thermal to electric conversion scheme

Hagelstein

Chen

et al. 2009

Journal of Applied Physics

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“…An observed fivefold increase in the short-circuit current was interpreted as an evanescent-coupling effect on the heat transfer. In 2005, DiMatteo et al [105] provided a conclusive assessment of their proposed micron-gap TPV experimental setup by car- rying out measurements at higher temperatures, increasing the area and current capacity of the PV diode array, and minimizing associated thermal conduction losses by using tubular spacers. They found the output power was highly dependent on the series resistance, shunt resistance and temperature of the PV diode, suggesting a need to redesign PV diodes for higher current capacities, as well as the need to develop thermal emitters and maintain high temperature difference under such small spacings with minimized heat conduction contribution.…”

Section: Near-field Tpvmentioning

confidence: 99%

Solar thermophotovoltaics: reshaping the solar spectrum

et al. 2016

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Abstract:Recently, there has been increasing interest in utilizing solar thermophotovoltaics (STPV) to convert sunlight into electricity, given their potential to exceed the Shockley-Queisser limit. Encouragingly, there have also been several recent demonstrations of improved systemlevel efficiency as high as 6.2%. In this work, we review prior work in the field, with particular emphasis on the role of several key principles in their experimental operation, performance, and reliability. In particular, for the problem of designing selective solar absorbers, we consider the trade-off between solar absorption and thermal losses, particularly radiative and convective mechanisms. For the selective thermal emitters, we consider the tradeoff between emission at critical wavelengths and parasitic losses. Then for the thermophotovoltaic (TPV) diodes, we consider the trade-off between increasing the potential short-circuit current, and maintaining a reasonable opencircuit voltage. This treatment parallels the historic development of the field, but also connects early insights with recent developments in adjacent fields. With these various components connecting in multiple ways, a system-level end-to-end modeling approach is necessary for a comprehensive understanding and appropriate improvement of STPV systems. This approach will ultimately allow researchers to design STPV systems capable of exceeding recently demonstrated efficiency values.

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“…DeMeo et al [92] suggest using them with rectennas and propose many design prototypes. Some trials have taken place to commercialize their application [89,93].…”

Section: Impact From the Rectifier Devicementioning

confidence: 99%

THz Rectennas and Their Design Rules

2017

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Abstract:The increasing demand for more efficient energy harvesting solutions has urged research for better harvesting solutions than the presently-available ones. While p-n junction solar cells have become commercially widespread, they are expensive and suffer from poor efficiency figures hardly reaching 20%. Other radiation-electricity converters such as rectennas have a theoretical limit in excess of 80%. However, no efficient rectenna solution for the terahertz frequency band has been commercialized or presented in the academic literature. In fact, there are many obstructions to an efficient solution. The aim of this paper is to address the key points towards an efficient and commercially-available solution by briefly reviewing the relevant literature and so identifying five factors that should be addressed in order to reach an efficient solution.

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Micron-gap ThermoPhotoVoltaics (MTPV)

Cited by 40 publications

References 0 publications

Quantum-coupled single-electron thermal to electric conversion scheme

Quantum-coupled single-electron thermal to electric conversion scheme

Solar thermophotovoltaics: reshaping the solar spectrum

THz Rectennas and Their Design Rules

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