Using mechanically flexible substrates for complex (opto-)electronic device architectures is of growing interest in the area of consumer electronics, [1] for wearables [2] or for applications in biology and life science. [3] Potential candidates for light-emitting devices (LEDs) on curved or flexible surfaces are organic LEDs (OLEDs) [4] or quantum dot LEDs [5,6] (QD-LEDs). Higher durability is achieved by bottom-up approaches, which combine individual inorganic micro-LEDs to flexible arrays. [1,3] Although two-dimensional (2D) materials are ideally suited for flexible device applications, [7-9] only a few flexible prototype devices such as transistors [10-12] or photodetectors [13-15] have

Red-, orange-, and green-emitting integrated optoelectronic sources are demonstrated by transfer printing blue InGaN µLEDs onto ultra-thin glass platforms functionally enhanced with II-VI colloidal quantum dots (CQDs). The forward optical power conversion efficiency of these heterogeneously integrated devices is, respectively, 9%, 15%, and 14% for a blue light absorption over 95%. The sources are demonstrated in an orthogonal frequency division multiplexed (OFDM) visible light communication link reaching respective data transmission rates of 46 Mbps, 44 Mbps and 61 Mbps.