@article{Lu2025, 
author = {Zehua Lu and Muhammad Tahir and Shengxi Yuan and Xiaoxia Yu and Yawei Cao and Lihong Li},
title = {Fully printed flexible solar-blind self-powered photodetector based on atomic-thin wide bandgap heterostructure},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {9},
pages = {94907698},
keywords = {heterostructure, solar blind, wide bandgap, anion intercalation, ink-printed},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907698},
doi = {10.26599/NR.2025.94907698},
abstract = {The demand for cost-effective and scalable manufacturing processes in flexible functional device fabrication has led to the exploration of novel materials and innovative fabrication techniques for wearable health monitoring systems. However, ultraviolet (UV) photodetectors, due to wide band gap responsive substance with complicated synthesis, always require an external power supply and suffer low response rates and slow response times. Here, we present a solution-processed, scalable, and ink-printed integrated UV photodetector based on granular-derived power-intercalated Bi2O2Se/Bi2SeO5 heterostructure nanosheets, a promising two-dimensional (2D) semiconductor with notable optical and electrical properties. By employing fine and highly conductive MXene-Pt-Ni current collectors, Bi2O2Se/Bi2SeO5 heterostructure UV photodetector demonstrates impressive performance in the UV spectral range, showcasing high responsivity and rapid photoresponse, with diverse applications from wearable electronics to environmental monitoring systems. The device exhibits a notable photocurrent on/off ratio and low dark current, with photocurrent density (Iph) of 2.2 μA·cm−2 and detectivity (D*) of 3.31 × 1010 Jones, outperforming previously reported all-printed devices, highlighting its potential for low-power and high-performance applications. Moreover, integrating the photodetector into a printed electronics platform enables seamless incorporation into flexible and conformal systems, extending its utility in various form factors and applications.}
}