|
Showing 1 - 2 of
2 matches in All Departments
Less than a decade ago, lead halide perovskite semiconductors
caused a sensation: Solar cells exhibiting astonishingly high
levels of efficiency. Recently, it became possible to synthesize
nanocrystals of this material as well. Interestingly; simply by
controlling the size and shape of these crystals, new aspects of
this material literally came to light. These nanocrystals have
proven to be interesting candidates for light emission. In this
thesis, the recombination, dephasing and diffusion of excitons in
perovskite nanocrystals is investigated using time-resolved
spectroscopy. All these dynamic processes have a direct impact on
the light-emitting device performance from a technology point of
view. However, most importantly, the insights gained from the
measurements allowed the author to modify the nanocrystals such
that they emitted with an unprecedented quantum yield in the blue
spectral range, resulting in the successful implementation of this
material as the active layer in an LED. This represents a
technological breakthrough, because efficient perovskite light
emitters in this wavelength range did not exist before.
Less than a decade ago, lead halide perovskite semiconductors
caused a sensation: Solar cells exhibiting astonishingly high
levels of efficiency. Recently, it became possible to synthesize
nanocrystals of this material as well. Interestingly; simply by
controlling the size and shape of these crystals, new aspects of
this material literally came to light. These nanocrystals have
proven to be interesting candidates for light emission. In this
thesis, the recombination, dephasing and diffusion of excitons in
perovskite nanocrystals is investigated using time-resolved
spectroscopy. All these dynamic processes have a direct impact on
the light-emitting device performance from a technology point of
view. However, most importantly, the insights gained from the
measurements allowed the author to modify the nanocrystals such
that they emitted with an unprecedented quantum yield in the blue
spectral range, resulting in the successful implementation of this
material as the active layer in an LED. This represents a
technological breakthrough, because efficient perovskite light
emitters in this wavelength range did not exist before.
|
You may like...
Loot
Nadine Gordimer
Paperback
(2)
R398
R330
Discovery Miles 3 300
Loot
Nadine Gordimer
Paperback
(2)
R398
R330
Discovery Miles 3 300
|
Email address subscribed successfully.
A activation email has been sent to you.
Please click the link in that email to activate your subscription.