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Ultrafast dynamics associated with t...

Smeigh, Amanda Lea.

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Ultrafast dynamics associated with transition metal-based sensitizers for titanium dioxide based solar cells.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Ultrafast dynamics associated with transition metal-based sensitizers for titanium dioxide based solar cells./
Author:	Smeigh, Amanda Lea.
Description:	146 p.
Notes:	Adviser: James K. McCusker.
Contained By:	Dissertation Abstracts International68-05B.
Subject:	Chemistry, Inorganic. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3264235
ISBN:	9780549028093

Ultrafast dynamics associated with transition metal-based sensitizers for titanium dioxide based solar cells.
Smeigh, Amanda Lea.

Ultrafast dynamics associated with transition metal-based sensitizers for titanium dioxide based solar cells. - 146 p.

Adviser: James K. McCusker.

Thesis (Ph.D.)--Michigan State University, 2007.

The importance of alternative energy sources in today's energy economy is undeniable. Currently, few consumers utilize alternative fuels in their everyday lives due to the large initial cost associated with installing the needed equipment. The research presented in this dissertation concerns a novel TiO2-based solar cell, which has the potential to replace the expensive Si-based material currently used in commercially available solar cells. While the research presented here does not present a solution to the high cost of solar cell technology it does cover some important areas of research that are essential to furthering the technology needed to make these TiO2-based solar cells commercially viable.

ISBN: 9780549028093Subjects--Topical Terms:

517253
Chemistry, Inorganic.

Ultrafast dynamics associated with transition metal-based sensitizers for titanium dioxide based solar cells.
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020 $a 9780549028093
035 $a (UMI)AAI3264235
035 $a AAI3264235
040 $a UMI $c UMI
100 1 $a Smeigh, Amanda Lea. $3 1280038
245 1 0 $a Ultrafast dynamics associated with transition metal-based sensitizers for titanium dioxide based solar cells.
300 $a 146 p.
500 $a Adviser: James K. McCusker.
500 $a Source: Dissertation Abstracts International, Volume: 68-05, Section: B, page: 3046.
502 $a Thesis (Ph.D.)--Michigan State University, 2007.
520 $a The importance of alternative energy sources in today's energy economy is undeniable. Currently, few consumers utilize alternative fuels in their everyday lives due to the large initial cost associated with installing the needed equipment. The research presented in this dissertation concerns a novel TiO2-based solar cell, which has the potential to replace the expensive Si-based material currently used in commercially available solar cells. While the research presented here does not present a solution to the high cost of solar cell technology it does cover some important areas of research that are essential to furthering the technology needed to make these TiO2-based solar cells commercially viable.
520 $a Details concerning the basic mechanism of the cell and the limitations of the current configuration are presented. A brief discussion on the electrolyte dependent injection rate of N3 bound to TiO2 is presented, where we find that injection rates for N3 bound to TiO2 is highly dependent on the concentration and identity of small ions in the supporting electrolyte. We show that it is essential to use salts that contain a redox active species to best model the functional cell during optical measurements. Subsequent discussions focus on fundamental studies of the intrinsic excited state dynamics of a series of iron(II) complexes.
520 $a The ultrafast evolution of the excited state manifold in iron(II) polypyridyl complexes consists of deactivation of the charge transfer manifold in less then 100 fs and complete thermalizaiton of the long-lived, metal centered, ligand field excited state in under 50 ps. Generalization of these ultrafast excited state lifetimes observed in a series of iron(II) complexes provides a foundation for beginning to understand the dynamics associated with the intramolecular relaxation pathways of iron(II) complexes. Due to the inherently short lived charge transfer state present in iron(II) polypyridyl complexes, few iron(II)-based sensitizer have been used in TiO2-based solar cells; however, establishing a better understanding of the charge transfer excited state's relaxation pathway will enable the identification of the molecular characteristics needed to potentially engineer an iron(II) complex that has a longer lived charge transfer state. In addition, the work done here provides a spectroscopic protocol for the characterization of new iron(II) complexes.
590 $a School code: 0128.
650 4 $a Chemistry, Inorganic. $3 517253
690 $a 0488
710 2 $a Michigan State University. $3 676168
773 0 $t Dissertation Abstracts International $g 68-05B.
790 $a 0128
790 1 0 $a McCusker, James K., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3264235