Interplay of Structural and Light-induced Carrier Dynamics in Metal Halide Perovskites

As one of the fastest-growing renewable energy technologies, photovoltaics play an increasingly important role in the global energy transition. Over the past decade, metal halide perovskite solar cells (PSCs) have emerged as the most promising candidates for next-generation solar cells, with a certified power conversion efficiency of 26.1% for...

Revealing loss and degradation mechanisms in metal halide perovskite solar cells: The role of defects and trap states

For centuries we have relied on fossil fuels to produce energy for our needs, causing significant damage to the environment and our own health. To make an energy transition possible, technology has to step up, providing solutions for cleaner and cheaper energy production. In the field of solar energy, perovskite-based devices can offer a...

Photochromism and photoconductivity in rare-earth oxyhydride thin films

The uncommon photochromism, photo-conductivity, and H-mobility of RE oxyhydride materials make them promising candidates for application in optics, opto-electronics and electrochemical devices alike. Additionally, their extreme compositional flexibility and the connected variety of possible (meta)stable phases make them an excellent case study...

Doping on Demand: Permanent electrochemical doping of colloidal quantum dots and organic semiconductors

Control over the charge carrier density of semiconductor materials is essential for various electronic devices. Unfortunately, common electronic doping methods have not always been successful for new generations of semiconductors, such as organic semiconductors and colloidal quantum dots. Therefore, a new doping method that offers a great...

Triplet Dynamics in Crystalline Perylene Diimides

Conjugated organic materials are interesting for application in opto-electronic devices where they can act as a light absorbing layer, for instance in solar cells or as a light emitting layer in light-emitting diodes. In addition, they can also be used as the semiconducting materials in for instance field-effect transistors. Conjugated organic...

Towards control of the optoelectronic properties of organic-inorganic perovskites

In this thesis we have aimed to tune and control the optoelectronic properties of organic-inorganic metal halide perovskites by systematically changing components in the structure and studying the charge carrier dynamic mechanisms....

Light-induced Charge Carrier Dynamics in Metal Halide Perovskites

Metal halide perovskites (MHPs) are interesting candidates for application in photovoltaic devices. During the past decade the efficiency of perovskite solar cells has improved enormously exceeding now values over 24%. In an MHP absorber layer, charge carriers are generated on optical excitation, and decay by band-to-band recombination or by...

Charge generation and recombination in nanostructured photovolatic materials