Erasable Semiconductor Programmed by Light Developed by Researchers
Scientists have engineered a novel, ultra-thin semiconductor that can repeatedly alter its electronic properties in response to different wavelengths of light, paving the way for more adaptable and energy-efficient electronic devices.
Researchers at Princeton Engineering have developed a semiconductor material just a few molecules thick, capable of dynamically changing its properties when exposed to light. This breakthrough offers a new direction for creating more energy-efficient sensors, optoelectronic devices, and computing technologies, moving beyond the limitations of simply shrinking existing semiconductor components.
The new material's key innovation lies in its responsiveness to external stimuli, a departure from conventional semiconductors whose electrical conductivity is largely fixed after manufacturing. "One of the future goals for advancing electronics is not just making materials smaller, but making them adaptable and smarter," stated Jaehoon Ji, a postdoctoral researcher and lead author of the study published in Science Advances.
The team achieved this by integrating a superthin semiconductor with light-responsive molecules. These molecules undergo structural changes when exposed to specific light wavelengths, which in turn modifies the semiconductor's electronic characteristics. This allows the material's conductivity and optical response to be programmed, erased, and reprogrammed using light, enabling gradual adjustments rather than simple on-off switching.
Princeton's researchers have successfully created a uniform, 1-inch square piece of this material, demonstrating arrays of programmable electronic switches. The next phase of their work involves connecting these switches into circuits, a foundational step for developing more complex electronic systems. Their long-term vision is to create electronics whose functionality can be reconfigured after fabrication, rather than being permanently set during manufacturing.
This development signifies a shift towards 'smart' materials in electronics, where functionality is not fixed but dynamically reconfigurable. The ability to program and erase semiconductor properties with light, particularly in large-area formats, opens possibilities for adaptive optoelectronics and potentially novel computing architectures. Such adaptable materials are crucial for future advanced manufacturing, including potential applications in space where in-situ repair or reconfiguration might be necessary.
Edited by the news editor with AI from the original report — please refer to the original source.