@article{Wang2023, 
author = {Huide Wang and Yonghong Zeng and FanXu Meng and Rui Cao and Yi Liu and Zhinan Guo and Tingting Wang and Haiguo Hu and Sidi Fan and Yatao Yang and S. Wageh and Omar A. Al-Hartomy and Abul Kalam and Yonghong Shao and Yu-Jia Zeng and Dianyuan Fan and Han Zhang},
title = {Interlayer sensitized van der Waals heterojunction photodetector with enhanced performance},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {7},
pages = {10537-10544},
keywords = {charge transfer, heterojunction, photodetector, responsivity, interlayer sensitization},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5611-4},
doi = {10.1007/s12274-023-5611-4},
abstract = {Although photodetection based on two-dimensional (2D) van der Waals (vdWs) P–N heterojunction has attracted extensive attention recently, their low responsivity (R) due to the lack of carrier gain mechanism in reverse bias or zero bias operation hinders their applications in advanced photodetection area. Here, a black phosphorus/rhodamine 6G/molybdenum disulfide (BP/R6G/MoS2) photodiode with high responsivity at reverse bias or zero bias has been achieved by using interfacial charge transfer of R6G molecules assembled between heterojunction layers. The formed vdWs interface achieves high performance photoresponse by efficiently separating the additional photogenerated electrons and holes generated by R6G molecules. The devices sensitized by the dye molecule R6G exhibit enhanced photodetection performance without sacrificing the photoresponse speed. Among them, the R increased by 14.8–20.4 times, and the specific detectivity (D*) increased by 24.9–34.4 times. The strategy based on interlayer assembly of dye molecules proposed here may pave a new way for realizing high-performance photodetection based on 2D vdWs heterojunctions with high responsivity and fast response speed.}
}