Design of Contact Electrodes for Semiconductor Nanowire Solar Energy Harvesting Devices

Lin, Tzu-ging; Ramadurgam, Sarath; Yang, Chen

doi:10.1021/acs.nanolett.6b04046

Cited by 7 publications

(5 citation statements)

References 55 publications

(103 reference statements)

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“…This case displays a superscattering result, but it is achieved by exciting higher partial wave modes, i.e., quasi-superscatters. We note that with state of the art, hetero-nanowires can have Co–Ag/Pt core–shell 39 – 41 , Fe-Au/Ag core–shell 39 , 42 , 43 , In-Si core-shell 39 , 44 , Au–Co core–shell 39 , 45 and GaP-ITO/Ag/Cu core-shell 46 . We believe our findings in quasi-minimum-scattering- superabsorbers and quasi-superscatters might be demonstrated with these already structures.…”

Section: Quasi-minimum-scattering- Superabsorbers and Quasi-superscattersmentioning

confidence: 95%

Degeneracy of light scattering and absorption by a single nanowire

Chen

2021

Sci Rep

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We theoretically and numerically prove that under an electromagnetic plane wave with linear polarization incident normally to a single nanowire, there exists a power diagram that could indicate scattering properties for any system configurations, material parameters, and operating wavelength. We demonstrate the distinct power distribution boundary in absorption, scattering, and extinction for a generalized nanowire with any partial wave modes dominant. In the boundary, each dominant scattering coefficients remain constant, and its energy performance would display superabsorbers or superscatterers. Interestingly, for a system with larger partial wave modes dominant, the occupied domain in the power diagram could completely cover that with lower ones. Hence, a system with different levels of partial wave modes can display the same power results, reflecting the degeneracy. This degenerate property could release more degrees of freedom in design of energy harvesting devices and sensors. We demonstrate several systems based on realistic materials to support our findings.

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Section: Quasi-minimum-scattering- Superabsorbers and Quasi-superscattersmentioning

confidence: 95%

Degeneracy of light scattering and absorption by a single nanowire

Chen

2021

Sci Rep

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“…the characteristic charge carrier mobility and lifetime) reflect the nature and quality of semiconductor device materials, 46 and is influenced by device architecture, the nature and dimensions of the materials and interfaces involved, and operational mode. 47 Examples include semiconducting zero-dimensional (0D) nanocrystals (NCs) and quantum dots (QDs), 48,49 1D nanowire solar cells, 50 two-dimensional (2D) GaN, 51 and three-dimensional (3D) InGaN/GaN core-shell nanorods 52 and nanoscale silicon-based transistors, 53,54 which can demonstrate opto-electrical, photovoltaic, and signal switching properties superior to those of their bulk and large-area counterparts.…”

Section: A Sample Description and Experimental Setupmentioning

confidence: 99%

Thermodynamic photoinduced disorder in AlGaN nanowires

Alfaraj

Muhammed

et al. 2017

AIP Advances

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In this study, we examine thermodynamic photoinduced disorder in AlGaN nanowires through their steady-state and transient photoluminescence properties. We correlate the energy exchange during the photoexcitation and photoemission processes of the light–solid reaction and the generation of photoinduced entropy of the nanowires using temperature-dependent (6 K to 290 K) photoluminescence. We observed an oscillatory trend in the generated entropy of the system below 200 K, with an oscillation frequency that was significantly lower than what we have previously observed in InGaN/GaN nanowires. In contrast to the sharp increase in generated entropy at temperatures close to room temperature in InGaN/GaN nanowires, an insignificant increase was observed in AlGaN nanowires, indicating lower degrees of disorder-induced uncertainty in the wider bandgap semiconductor. We conjecture that the enhanced atomic ordering in AlGaN caused lower degrees of disorder-induced uncertainty related to the energy of states involved in thermionic transitions; in keeping with this conjecture, we observed lower oscillation frequency below 200 K and a stable behavior in the generated entropy at temperatures close to room temperature.

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“…Various environmental energies are available for energy harvesting, for example vibration, [16][17][18] heat, [19][20][21] light, [22][23][24] electromagnetic waves [25][26][27] and so on. Heat is one of the energy sources that can be easily accessed in our daily lives; the human body, electric devices and automobiles are all examples of familiar heat sources.…”

Section: Introductionmentioning

confidence: 99%

The effect of oxidation temperature on the thermoelectric performance of a plate-type thermoelectric power generator

Ogi¹,

Tohmyoh²

2019

Jpn. J. Appl. Phys.

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This paper reports on the effect of oxidation temperature on the thermoelectric performance of a plate-type thermoelectric power generator. Recently, thermoelectric power generation methods have attracted considerable attention as energy harvesting technologies. Among these, a plate-type thermoelectric power generator in which an Al layer is deposited on a Fe plate has been reported. Although oxidation of the surface of the Fe plate was verified experimentally to be effective in enhancing the thermoelectric performance, the kind of oxide suitable for a plate-type generator has yet to be investigated. In this study we oxidized the surface of an Fe plate at different temperatures, and plate-type thermoelectric power generators having various oxides at the bi-metallic interface were fabricated. It was found that Fe 2 O 3 made a large contribution to increasing the Seebeck coefficient compared with Fe 3 O 4 . The generator with a bi-metallic interface oxidized at 400 °C showed the maximum power, the value being 1.4 μW at a temperature difference of 40 °C. Furthermore, we developed a theoretical model to predict the maximum power of a plate-type generator based on solid-state physics, and the predicted values were in good agreement with the experimental ones.

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Design of Contact Electrodes for Semiconductor Nanowire Solar Energy Harvesting Devices

Cited by 7 publications

References 55 publications

Degeneracy of light scattering and absorption by a single nanowire

Degeneracy of light scattering and absorption by a single nanowire

Thermodynamic photoinduced disorder in AlGaN nanowires

The effect of oxidation temperature on the thermoelectric performance of a plate-type thermoelectric power generator

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