Day-Night imaging without Infrared Cutfilter removal based on metal-gradient perovskite single crystal photodetector.

ABSTRACT: Day-Night imaging technology that obtains full-color and infrared images has great market demands for security monitoring and autonomous driving. The current mainstream solution relies on wide-spectrum silicon photodetectors combined with Infrared Cutfilter Removal, which increases complexity and failure rate. Here, we address these challenges by employing a perovskite photodetector based on Pb-Sn alloyed single crystal with a vertical bandgap-graded structure that presents variable-spectrum responses at different biases and extends the infrared detection range close to 1100 nm. Taking advantage of the Pb-Sn gradients in mobility and built-in field, the perovskite photodetector shows a large linear dynamic range of 177 dB. In addition, the optoelectronic characteristics feature long-term o

SUBMITTER: Ma Y 

PROVIDER: S-EPMC11362523 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature