Special Issue on Emerging low-dimensional optoelectronic materials and devices
The rapid development of nano-/micro- and mobile electronics has put forward higher requirements for optoelectronic technologies, including ultra-small size, high speed, high efficiency, and low power consumption. In recent years, the research and industrial applications on optoelectronic semiconductors in photovoltaic, light emitting, photo detecting, optical communicating devices have made rapid progress. At the same time, a series of low-dimensional optoelectronic materials such as quantum dots, nanowires, two-dimensional materials, micro-/ nano- photonic structure, organic-inorganic hybrid perovskite have emerged, and exhibited promising device performance. These novel optoelectronic materials have also been gradually integrated with semiconductor technology and silicon-based photonics, which shows great potential for integrated optoelectronics.
Despite the above rapid progresses, many key challenges are still waiting to be addressed. Firstly, the unique advantages of these novel low-dimensional materials as compared to their bulk counterpart should be clearly identified. This is important because the key characteristic of the emerging optoelectronic materials should be utilized to improve the device performance. Secondly, the defects and interface states of low-dimensional materials are rich and would strongly affect the performance. The underlying mechanism of how the defects or interface affect the photoexcited carrier dynamics should be deeply investigated. The precise manipulation of defects and interface in order to design devices with ideal performance is highly desired. Thirdly but not the last, issues regarding the integration of low-dimensional materials with conventional semiconductors, e.g. Si, including the direct growth and clean transfer, interface quality control, interaction between the two materials should also be carefully studied.
This special issue aims to explore the fundamental properties of emerging low dimensional optoelectronic materials and their applications in optoelectronic devices.
