{'fraction_non_alphanumeric': 0.031049250535331904, 'fraction_numerical': 0.0, 'mean_word_length': 4.993589743589744, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
GaN-based micro-LEDs and detectors defined by current spreading layer: size-dependent characteristics and their multifunctional applications

An integrated device of GaN-based micro-LED and detector was developed for multifunctional applications in visible light communication (VLC). The size of the current spreading layer was used to define the micro-LED size for high-bandwidth transmitter. The device can also be used as high-sensitivity photodetector (PD). In this scenario, the light receiving area is not restricted by the size of the current spreading layer. The size-dependent characteristics of the PD have been investigated in detail. Such integrated devices can be used as both micro-LED and PD for duplex high-speed VLC. Besides, we demonstrated the functions of solid-state lighting and VLC when the device was integrated with broad-area LED, as well as the potential application in micro-LED display combining with VLC.