In lighting and display technology, quantum dots can bring the combined benefit of enhanced performance and reduced power consumption, and lead to tailored, spectrum-by-design light sources for special applications. However, a direct transfer of QD-technology to these broader markets faces issues with either performance, stability, cost or composition of the QDs. The assumption behind QDoCCo is that a shift from a remote to an on-chip phosphor configuration is the key step to square the performance, stability, cost and composition circle for QD-based products. QDoCCo has 4 major objectives: i) The formation of novel, Cd-free colloidal quantum dots, ii) The formation of encapsulated quantum-dot-in-polymer beads, iii) Opto-thermal modeling of quantum-dot-on-chip light sources and iv) Spectrum-by-design demonstrators.