We present optically tunable operations of deoxyribonucleic acid (DNA) biopolymer devices, where a single high-resistance state, write-once read-many-times memory state, write-read-erase memory state, and single low-resistance state can be achieved by controlling UV irradiation time. The device is a simple sandwich structure with a spin-coated DNA biopolymer layer sandwiched by two electrodes. Upon irradiation, the electrical properties of the device are adjusted owing to a phototriggered synthesis of silver nanoparticles in DNA biopolymer, giving rise to multiple switching scenarios. This technique, distinct from the strategy of doping of pre-formed nanoparticles, enables a post-film fabrication process for achieving optically controlled memory device operations, which provides a more versatile platform to fabricate organic memory and optoelectronic devices.
Optically controlled multiple switching operations of DNA biopolymer devices
Chao-You Hung, Waan-Ting Tu, Yi-Tzu Lin, Ljiljana Fruk, Yu-Chueh Hung; Optically controlled multiple switching operations of DNA biopolymer devices. J. Appl. Phys. 21 December 2015; 118 (23): 235503. https://doi.org/10.1063/1.4938197
Download citation file: