Photonic integrated circuits, known for their potential to revolutionize high computational speed and low power consumption, are poised to become the frontrunners for the next generation of chips that transcend Moore's Law and supplant traditional electronic components. Nevertheless, the laser light source, the linchpin of optical communication within these circuits, presents a bottleneck that hinders further miniaturization. The advent of nanoscale two-dimensional materials presents a novel opportunity for on-chip light sources, heralding significant advancements in photonic integrated circuit technology.