| 摘要 |
This invention generally relates to apparatus and methods for testing molecular electronic devices, especially organic light emitting diodes (OLEDs). More particularly the invention relates to substrates and masks for such devices, particularly including test structures, and methods of use of these. We therefore describe a substrate having formed thereon a plurality of organic molecular electronic devices, in particular OLEDs, and at least one test structure, the test structure being configured for evaluating the devices or for characterising a layer of active organic material of the devices, or, for example, for monitoring ingress of a contaminant. |
