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Improved efficiency organic photovol...

Wu, Qi.

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Improved efficiency organic photovoltaic cells through morphology control and process modification.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Improved efficiency organic photovoltaic cells through morphology control and process modification./
Author:	Wu, Qi.
Description:	123 p.
Notes:	Source: Dissertation Abstracts International, Volume: 76-01(E), Section: B.
Contained By:	Dissertation Abstracts International76-01B(E).
Subject:	Chemistry, Polymer. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3583936
ISBN:	9781321199963

Improved efficiency organic photovoltaic cells through morphology control and process modification.
Wu, Qi.

Improved efficiency organic photovoltaic cells through morphology control and process modification. - 123 p.

Source: Dissertation Abstracts International, Volume: 76-01(E), Section: B.

Thesis (Ph.D.)--The University of Southern Mississippi, 2014.

This item must not be sold to any third party vendors.

Organic photovoltaic (OPV) cells have drawn great attention due to the potential to produce flexible, light weight, affordable solar cells using polymer organic photovoltaic materials; however, the current power conversion efficiency achieved for these systems is too low for widespread implementation of the technology. Morphology and phase separation are key factors determining the performance of organic photovoltaic cells. Precise control of the size and distribution of the phase-separated photoactive domains is necessary for optimum photon-electron conversion. Polyhedral oligomeric silsesquioxane (POSS) nanostructured chemicals have the potential to provide enhanced control of morphology, crystallinity, and phase dispersion in polymeric blend systems. In this work, POSS molecules with different organic functionalities were utilized to control OPV film morphology. The light absorption, crystallinity, and phase separated domain size were evaluated to determine the relationship between POSS structures and film characteristics. The selected POSS molecules were utilized for further device fabrication and performance measurements, with which the POSS enhanced performance was revealed. Furthermore, processing conditions are also important in determining the performance and phase separated morphology of the OPV devices. The effects of solvent vapor annealing and thermal annealing were evaluated in terms of light absorption, crystallinity, long-term stabilitiy, and device performance.

ISBN: 9781321199963Subjects--Topical Terms:

1018428
Chemistry, Polymer.

Improved efficiency organic photovoltaic cells through morphology control and process modification.
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020 $a 9781321199963
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100 1 $a Wu, Qi. $3 1030532
245 1 0 $a Improved efficiency organic photovoltaic cells through morphology control and process modification.
300 $a 123 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-01(E), Section: B.
500 $a Adviser: Sarah Morgan.
502 $a Thesis (Ph.D.)--The University of Southern Mississippi, 2014.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a Organic photovoltaic (OPV) cells have drawn great attention due to the potential to produce flexible, light weight, affordable solar cells using polymer organic photovoltaic materials; however, the current power conversion efficiency achieved for these systems is too low for widespread implementation of the technology. Morphology and phase separation are key factors determining the performance of organic photovoltaic cells. Precise control of the size and distribution of the phase-separated photoactive domains is necessary for optimum photon-electron conversion. Polyhedral oligomeric silsesquioxane (POSS) nanostructured chemicals have the potential to provide enhanced control of morphology, crystallinity, and phase dispersion in polymeric blend systems. In this work, POSS molecules with different organic functionalities were utilized to control OPV film morphology. The light absorption, crystallinity, and phase separated domain size were evaluated to determine the relationship between POSS structures and film characteristics. The selected POSS molecules were utilized for further device fabrication and performance measurements, with which the POSS enhanced performance was revealed. Furthermore, processing conditions are also important in determining the performance and phase separated morphology of the OPV devices. The effects of solvent vapor annealing and thermal annealing were evaluated in terms of light absorption, crystallinity, long-term stabilitiy, and device performance.
590 $a School code: 0211.
650 4 $a Chemistry, Polymer. $3 1018428
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Nanotechnology. $3 526235
690 $a 0495
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710 2 $a The University of Southern Mississippi. $3 1018511
773 0 $t Dissertation Abstracts International $g 76-01B(E).
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791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3583936