CuBi₂O₄nanocrystals integrated with polyaniline nanobelt arrays for weak light photomultiplication type photodetector

Abstract

Novel CuBi2O4 nanocrystals incorporated in the polyaniline matrix utilized for the fabrication of a flexible and bio-compatible device for the detection of low-intensity photons by using a photomultiplication type photodetector.

An investigation into the hybrid architecture of Mn–Co nanoferrites incorporated into a polyaniline matrix for photoresponse studies

“…[45][46][47] The core spectrum of oxygen (O 1s) shows peaks centered at 532.98 eV for C-O and 531.95 eV for CQO as mentioned in the previous reports. 9 The peaks with binding energies 530.99 eV and 529.92 eV were observed for metal-oxygen (i.e., Fe-O, Co-O, Mn-O) as reported earlier, 10 as shown in Fig. 3e.…”

“…8a shows the I-V curves in the range of À5 V to +5 V under light and dark conditions, and it demonstrates the ohmic properties of an MCF-PANI nanohybrid photodetector device. However, the pure PANI I-V curves reveal a non-linear behavior due to their different conducting paths, and photons' heating may present as stated by relation (9) shown in Fig. S3 (ESI †).…”

“…Recently, nanohybrids predominantly conjugated with polymers have attracted the attention of scientific community due to their bandgap nature, long-term stability, controlled morphology, enhanced absorption, excellent carrier mobility and transport properties, and environmentfriendly and scalable production capability. [6][7][8][9][10] Organic-inorganic hybrid systems with conducting polymers have attracted attention due to their potential electrical, optical, and magnetic properties that are impossible in pure polyaniline, as well as their affordability, environmental stability, high conductivity, ease of fabrication, and variable doping levels. [11][12][13][14][15][16] Polyaniline (PANI) is one of the most extensively investigated peculiar conducting polymers.…”

Photocurrent conversion capability of a 2D WS2-polyvinyl alcohol matrix and its DFT-based charge carrier dynamics analysis

“…One of the most crucial methods for increasing EQE and producing high-sensitivity photodetection is the photomultiplication (PM) effect. 44 Since the exciton binding energies of organic semiconductor materials are in between 0.1 and 1.4 eV, and are roughly three orders more than those of inorganic semiconductors, impact ionization cannot take place in organic photomultiplication as it can in inorganic photodiodes. Instead, carrier tunneling events facilitated by traps have been used to investigate how organic PM photodetectors operate.…”

Ultrathin CuBi2O4 on a bipolar Bi2O3 nano-scaffold: a self-powered broadband photoelectrochemical photodetector with improved responsivity and response speed

“…For designing broadband photodetectors, narrow-bandgap semiconductors with wide spectral absorption are expected. [12][13][14][15][16] However, a narrow bandgap is usually accompanied by a low photovoltage, resulting in limited photo-responsivity and a slow response speed. CuBi 2 O 4 has recently emerged as a promising photo-cathode material for PEC water splitting due to its ideal band gap (1.5-1.8 eV) and suitable conduction band positions for both water oxidation and proton reduction.…”