Freestanding α -rhombohedral borophene nanosheets: preparation and memory device application.
Xinchao LiangJinqian HaoPengyu ZhangChuang HouGuoan TaiPublished in: Nanotechnology (2022)
Borophene has attracted extensive interests owing to its distinct structural, electronic and optical properties for promising potential applications. However, the structural instability and need of metal substrate for deposition of borophene seriously restrict the exploration of its exceptional physical and chemical properties and further hamper its extensive applications towards high-performance electronic and optoelectronic devices. Here, we reported the synthesis of high-quality freestanding α -rhombohedral borophene nanosheets by a facile probe ultrasonic approach in different organic solvents. The results show that the nanosheets have high-quality in ethanol solution and have an average lateral size of 0.54 μ m and a thickness of around 1.2 nm. Photoluminescence spectra indicate that a strong quantum confinement effect occurs in the nanosheets, which caused the increase of the band gap from 1.80 eV for boron powders and 2.52 eV for the nanosheets s. A nonvolatile memory device based on the nanosheets mixed with polyvinylpyrrolidone was fabricated, which exhibited a good rewriteable nonvolatile memory behavior and good stability.
Keyphrases
- quantum dots
- reduced graphene oxide
- metal organic framework
- highly efficient
- visible light
- gold nanoparticles
- working memory
- transition metal
- mental health
- energy transfer
- minimally invasive
- photodynamic therapy
- optical coherence tomography
- mass spectrometry
- climate change
- solid phase extraction
- simultaneous determination
- molecularly imprinted