The most efficient energy-harvesting devices today rely on highly pure and crystalline materials; but this mitigates against their ubiquitous deployment. Next-generation energy harvesting devices will require active materials that enable large-scale manufacturing and a facile integration of multifunctional lightweight devices.Solution-processed semiconductors have received a great deal of attention during the last decades as a promising class of materials to address this challenge. They offer ease of processing and compatibility with existing large-scale manufacturing processes. Hybrid perovskites and Colloidal quantum dots (CQDs) are a family with significant potential as the semiconducting building blocks of optoelectronic devices. This work involves the exploration of new hybrid halide perovskites and CQDs and their characterization for low temperature thermoelectric applications.​