Ultrafast Photoinduced Electron Transfer in Bimolecular Donor-Acceptor Systems

Content Provider	Semantic Scholar
Author	Alsulami, Qana A.
Copyright Year	2016
Abstract	Ultrafast Photoinduced Electron Transfer in Bimolecular Donor-Acceptor Systems Qana Abed Alsulami The efficiency of photoconversion systems, such as organic photovoltaic (OPV) cells, is largely controlled by a series of fundamental photophysical processes occurring at the interface before carrier collection. A profound understanding of ultrafast interfacial charge transfer (CT), charge separation (CS), and charge recombination (CR) is the key determinant to improving the overall performances of photovoltaic devices. The discussion in this dissertation primarily focuses on the relevant parameters that are involved in photon absorption, exciton separation, carrier transport, carrier recombination and carrier collection in organic photovoltaic devices. A combination of steady-state and femtosecond broadband transient spectroscopies was used to investigate the photoinduced charge carrier dynamics in various donor-acceptor systems. Furthermore, this study was extended to investigate some important factors that influence charge transfer in donor-acceptor systems, such as the morphology, energy band alignment, electronic properties and chemical structure. Interestingly, clear correlations among the steady-state measurements, time-resolved spectroscopy results, grain alignment of the electron transporting layer (ETL), carrier mobility, and device
File Format	PDF HTM / HTML
DOI	10.25781/KAUST-GK83C
Alternate Webpage(s)	https://repository.kaust.edu.sa/bitstream/handle/10754/621960/Qana%20Alsulami%20-%20Dissertation%20-%20Final%20Draft.pdf?isAllowed=y&sequence=1
Alternate Webpage(s)	https://doi.org/10.25781/KAUST-GK83C
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article