Organic materials for humidity detection

This article deals with the research of different types of diketopyrrolopyrroles (DPPs) for humidity detection. Thin layers of various DPPs are exposed to water vapors and then responses of electrical properties of these layers are measured. Potentially suitable materials are deposited on substrates with interdigital electrodes and subsequently impedance humidity characteristics are measured. Comparison of these materials, their features and responses to an ambient humidity are discussed in more detail as well.