Polyphosphide Precursor for Low-Temperature Solution-Processed Fibrous Phosphorus Thin Films

Abstract

Crystalline red phosphorus has very recently emerged as a stable and cost-effective semiconductor material. However, despite its potentiality in electronics and optoelectronics, the widespread application of this material is still hampered by the limited synthetic route of the ampoule-based chemical vapor deposition that critically requires mineralizing agents. To address this issue, we report the chemical synthesis of soluble polyphosphide precursors that serve as inks for the solutionprocessed fabrication of crystalline fibrous phosphorus thin films. The purified polyphosphide precursor formed crystalline fibrous phosphorus via thermal annealing at a temperature as low as 250 °C without any mineralizing agents. This anionic polyphosphide functioned as a surface-capping ligand for nanoparticles including metals, semiconductors, and magnets. Therefore, the study investigates the possibility of solution-processed fibrous phosphorus thin films as active channel layers in fieldeffect transistors as well as photodetectors and demonstrates their initial performances on the charge-transport and photoresponsive characteristics of these devices. The effect of semiconducting PbS nanoparticles embedded in the fibrous phosphorus thin films on device performance was also studied. The synthesized polyphosphide precursor offers a vast opportunity for the facile preparation of crystalline red phosphorus and chemical design of nanoparticles.

Controllable Liquid Exfoliation of Fibrous Phosphorus and Its Live-Cell Imaging

“…17 Subsequently, the FP film was further studied by Ban et al; they reported an n-type semiconducting property and a remarkably strong photocurrent. 18 Our previous work revealed that an FP fiber has a rapid response time. 19 In addition, phosphorus is one of the most important elements in living organisms and so FP has a huge advantage in cell imaging.…”

“…Then, an FP film was synthesized by Smith et al on a silicon substrate, and the film showed carrier mobility of 308 cm 2 V –1 s –1 and an I on / I off ratio approaching 100 . Subsequently, the FP film was further studied by Ban et al; they reported an n-type semiconducting property and a remarkably strong photocurrent . Our previous work revealed that an FP fiber has a rapid response time .…”

Colloidal Suprastructures Self-Organized from Oppositely Charged All-Inorganic Nanoparticles

“…Moreover, the preparation of charged particles with soft stabilizers, such as ionic polymers or long-chain ionic molecules, at the surfaces of the particles is limited in most cases and requires an additional degree of control over the intermolecular interactions between the surface organic layers. ,,, Recently, significant advancement in the surface modification of NPs with molecular inorganic ions has been observed, which enables the synthesis of all-inorganic NPs with desired charges. ,− …”

Crystalline Red Phosphorus Nanoribbons: Large‐Scale Synthesis and Electrochemical Nitrogen Fixation

“…[11,28] The sharp peaks around 353 and 368 cm À1 are related to phosphorus cage stretching vibrations in the tube-like substructure of cRP. [28,29] Compared with bulk, the Raman signals of cRP NRs are slightly shifted to high wavenumber direction (Supporting Information, Figure S5). The purity is evaluated by X-ray photoelectron spectroscopy (XPS) (Supporting Information, Figure S6) and energy-dispersive X-ray spectrometer (EDS) (Supporting Information, Figure S7).…”