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Development and Characterization of ...

Furrow, Colin S.

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Development and Characterization of Intermediate-Band Quantum Wire Solar Cells.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Development and Characterization of Intermediate-Band Quantum Wire Solar Cells./
Author:	Furrow, Colin S.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2015,
Description:	103 p.
Notes:	Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.
Contained By:	Dissertation Abstracts International76-12B(E).
Subject:	Nanoscience. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3716693
ISBN:	9781321958386

Development and Characterization of Intermediate-Band Quantum Wire Solar Cells.
Furrow, Colin S.

Development and Characterization of Intermediate-Band Quantum Wire Solar Cells. - Ann Arbor : ProQuest Dissertations & Theses, 2015 - 103 p.

Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.

Thesis (Ph.D.)--University of Arkansas, 2015.

The effects of a quantum wire intermediate band, grown by molecular beam epitaxy, on the optical and electrical properties of solar cells are reported. To investigate the behavior of the intermediate band, the quantum wires were remotely doped at three different doping concentrations, the number of quantum wire layers was varied from three to twenty, and the solar cell structure was optimized. For all the structures, current-voltage and external quantum efficiency measurements were performed to examine the effect of absorption and power conversion of the intermediate band solar cell (IBSC). Time-resolved photoluminescence measurements showed that ?-doping can increase the lifetime of the excited electrons in the quantum wires. The quantum efficiency measurements revealed that the quantum wires extend the absorption spectrum in the infrared and produce a photocurrent by absorption of photons with energies below the GaAs band gap energy. In addition, the quantum wire intermediate band solar cell increased the solar conversion efficiency by 13.3% over the reference cell. An increase in the quantum efficiency was observed by increasing the number of quantum wire layers in the intermediate band. Furthermore, by optimizing the solar cell structure, the quantum efficiency and solar power conversion efficiency were substantially improved. Finally, temperature dependent current-voltage measurements reveal that the quantum wire intermediate band does not degrade the temperature sensitivity of the device. This research shows the potential for a quantum wire intermediate band as a viable option for creating higher efficiency solar cell devices.

ISBN: 9781321958386Subjects--Topical Terms:

587832
Nanoscience.

Development and Characterization of Intermediate-Band Quantum Wire Solar Cells.
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245 1 0 $a Development and Characterization of Intermediate-Band Quantum Wire Solar Cells.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2015
300 $a 103 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.
500 $a Adviser: Gregory Salamo.
502 $a Thesis (Ph.D.)--University of Arkansas, 2015.
520 $a The effects of a quantum wire intermediate band, grown by molecular beam epitaxy, on the optical and electrical properties of solar cells are reported. To investigate the behavior of the intermediate band, the quantum wires were remotely doped at three different doping concentrations, the number of quantum wire layers was varied from three to twenty, and the solar cell structure was optimized. For all the structures, current-voltage and external quantum efficiency measurements were performed to examine the effect of absorption and power conversion of the intermediate band solar cell (IBSC). Time-resolved photoluminescence measurements showed that ?-doping can increase the lifetime of the excited electrons in the quantum wires. The quantum efficiency measurements revealed that the quantum wires extend the absorption spectrum in the infrared and produce a photocurrent by absorption of photons with energies below the GaAs band gap energy. In addition, the quantum wire intermediate band solar cell increased the solar conversion efficiency by 13.3% over the reference cell. An increase in the quantum efficiency was observed by increasing the number of quantum wire layers in the intermediate band. Furthermore, by optimizing the solar cell structure, the quantum efficiency and solar power conversion efficiency were substantially improved. Finally, temperature dependent current-voltage measurements reveal that the quantum wire intermediate band does not degrade the temperature sensitivity of the device. This research shows the potential for a quantum wire intermediate band as a viable option for creating higher efficiency solar cell devices.
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