Ultrafast spectroscopy of organic and hybrid semiconductors
File(s)
Author(s)
Maslennikov, Dmitrii Romanovich
Type
Thesis or dissertation
Abstract
The sensational discovery of conductive polymers in 1977 marked the start of a new field of science and technology – soft electronics. For this discovery the 2000 Nobel Prize in Chemistry was awarded to Alan J. Heeger, Alan MacDiarmid, and Hideki Shirakawa. Since then a range of exciting applications have been developed based on novel types of organic and hybrid materials including light-emitting diodes, solar cells, and field-effect transistors. These devices offer unique advantages over their classic inorganic ounterparts, for example, being low cost, light-weight, flexible and easily chemically tunable. The development of new materials for high efficiency soft electronic devices requires detailed understanding of their intrinsic physics. It is well understood that fundamental physical processes controlling device performance, for example exciton formation and charge generation, are dynamic and fast in nature. The lifetimes of these processes are often at the femto- and nano- second timescales, which are not accessible by conventional spectroscopies. Fortunately, another fascinating field has emerged at the end of XX century – ultrafast spectroscopy, which makes possible probing the fast dynamics of electronic excitations in semiconductors by extremely short (from nano- to atto- seconds) pulses of light.
Version
Open Access
Date Issued
2024-01-11
Date Awarded
2024-08-01
Copyright Statement
Creative Commons Attribution NonCommercial Licence
License URL
Advisor
Bakulin, Artem
Sponsor
Imperial College London
Publisher Department
Chemistry
Publisher Institution
Imperial College London
Qualification Level
Doctoral
Qualification Name
Doctor of Philosophy (PhD)