A Delamination Strategy for Thinly Layered Defect‐Free High‐Mobility Black Phosphorus Flakes

Abstract

Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi. Theauthors declare no conflict of interest.Keywords: black phosphorus ·e lectrochemistry ·exfoliation · field-effect transistors ·two-dimensional flakes Figure 5. a) The field-effect transistor based on athinly layered BP flake (BP-FET). b) AFM image of arepresentative BP-FET channel with the BP flake bridging the source and drain electrodes. c) Transfer curves of aBP-FET with adifferent source-drain bias (V ds )m easured under vacuum;curves 1-6 are À1V ,À0.5 V, À0.1 V, À50 mV, À10 mV, and À1mV, respectively. d) The I-V characteristics for the same BP-FET.e)T emperature-dependent transfer curves measured from 300 to 143 K. f) Temperature-dependent hole mobility and the I on /I off ratio obtained from 13 devices.

Ultrathin tin monosulfide nanosheets with the exposed (001) plane for efficient electrocatalytic conversion of CO2 into formate

“…1c). 26 The exfoliated SnS powder can be readily collected and dispersed in N,N-dimethylformamide (DMF) to provide a homogeneous and stable dispersion with a concentration of 3.2 mg mL À1 (exfoliation yield of 75%, Fig. S1 †).…”

Air‐Stable Polyphosphazene‐Functionalized Few‐Layer Black Phosphorene for Flame Retardancy of Epoxy Resins

“…Multilayered BP crystal was prepared via high‐pressure or high‐temperature conversion of red or white phosphorus . Currently, single‐ to few‐layer BP was mainly obtained through top‐down strategy by ways of exfoliation procedures, such as micromechanical cleavage, ball milling, liquid exfoliation in organic solvents, and plasma thinning treatment . In order to get high‐quality few‐layer BP with no structural damage and a large lateral size, the as‐required BP nanosheets exfoliated from bulk BP by micromechanical method achieve the requirement but lack scalability.…”

Recent Advances in Chemical Functionalization of 2D Black Phosphorous Nanosheets

“…The number of layers can be controlled by adjusting the applied potential. Feng and co‐workers have reported an electrochemical delamination strategy to produce BPNSs: the one using tetra ‐ n ‐butylammonium cations and bisulfate anions can have an exfoliation yield up to 78% and flake sizes on a micrometer scale . Despite progress has been made, it is still challenging to prepare BPNSs mainly consisting of monolayer flakes through electrochemical exfoliation approach, which requires a better understanding of the mechanism of electrochemical exfoliation.…”