Controlling the Behavior of Single Live Cells with High Density Arrays of Microscopic OLEDs

Malte C. Gather
2015 Light, Energy and the Environement 2015   unpublished
Since their invention by Tang and Van Slyke in 1987 [1] , organic light-emitting diodes (OLEDs) have matured into highly efficient and versatile light sources. By today they have secured a substantial share of the market for mobile phone displays and are prime candidates for a range of applications including large area displays, luminescent signage and large lighting panels for glare-free solid-state illumination. [2] [3] [4] [5] The organic conjugated molecules on which OLEDs are based offer
more » ... s are based offer nearly unlimited possibilities for chemical tuning of their characteristics, such as color of emission [6] , and enable light-weight devices with inherent mechanical flexibility [7] [8] [9] . Compared to conventional inorganic LEDs, OLEDs are based on less toxic materials and their production has significantly lower environmental impact. OLEDs achieve sub-µs switching and their excellent efficiency allows high brightness levels without excessive heat production. Integration with suitable backplane driver electronics enables spatially controlled generation of light as required for high-resolution displays. These features also render the technology attractive for applications in biotechnology and biomedicine where controlled illumination is crucial, e.g. in optogeneticsa technique that enables precise control of neuronal behavior with light [10, 11] . However, device encapsulation represents a major challenge in this context, because contact with biological material typically
doi:10.1364/soled.2015.dw2c.3 fatcat:klojofii2regfgdn3f3i4to3xu