The use of optogenetic stimulation to evoke neuronal activity in targeted neural populations—
enabled by opsins with fast kinetics, high sensitivity and cell-type and subcellular specificity …

The human brain, with its vast network of billions of neurons and trillions of synapses
(connections) between diverse cell types, remains one of the greatest mysteries in science …

Angle-independent narrowband emission is required for many optoelectronic devices,
ranging from high-definition displays to sensors. However, emerging materials for …

Compact wireless light sources are a fundamental building block for applications ranging
from wireless displays to optical implants. However, their realization remains challenging …

The LED technology is seen today as the most promising approach to manufacture high
luminance color microdisplays for augmented reality application. So far, it mostly involves …

Organic light‐emitting diodes hold promise for producing multicolor, narrowband emissions,
and high‐definition displays. However, achieving a wide color gamut and strict color purity …

Abstract Hexacarbazolylbenzene (6CzPh), which is benzene substituted by six carbazole
rings, is a simple and attractive compound. Despite the success of a wide variety of …

Polariton organic light-emitting diodes (POLEDs) use strong light-matter coupling as an
additional degree of freedom to tailor device characteristics, thus making them ideal …

Direct deposition of organic light‐emitting diodes (OLEDs) on silicon‐based complementary
metal–oxide–semiconductor (CMOS) chips has enabled self‐emissive microdisplays with …

This thesis describes the development of a minimally invasive integrated platform for all-
optical neural stimulation and measurement (OptoSAM). The OptoSAM platform is a single …