A Quasi‐Liquid Iontronic–Electronic Light‐Harvesting Hybrid Photodetector with Giant Response

Abstract

A heterostructure formed by a layer of agarose gel drop-cast on a hydrothermally grown layer of ZnO nanorods on fluorine-doped tin oxide (FTO)-coated glass is examined for photoresponse with a top platinum tip contact. This ionic-gel-based hybrid device shows three orders of magnitude higher photocurrent as compared to the case of bare ZnO nanorods film.

Near‐Field Plasmonic Functionalization of Light Harvesting Oxide–Oxide Heterojunctions for Efficient Solar Photoelectrochemical Water Splitting: The AuNP/ZnFe2O4/ZnO System

“…Synthesis of ZFO/ZnO NR heterojunction Films : All chemicals used for the preparation of nanomaterials were of reagent grade and were used without further purification. Zinc acetate, Zinc nitrate, Hexamethylene tetramine, Polyethylenimine (PEI) were used as precursors for ZnO NR array film using open aqueous solution deposition (OASD) method reported earlier 20…”

“…In the present work we used ZnO nanorods (NR), grown by open aqueous solution deposition method,19, 20 which were then deposited with ZFO by pulsed laser deposition (PLD). Ideally it would be better to employ atomic layer deposition (ALD) to ensure highly uniform coverage and film thickness, however, in the absence of ALD congruent vapor deposition technique such as PLD is also known to render fairly uniform stoichiometric films of oxides under optimized growth conditions as evidenced by a large body of work on hetero‐interface systems 21.…”

“…These data are also presented in Figure 3. Additionally, the Tauc's plots from ZnO and ZFO have been presented as the inset, which show the band gap of ZnO at about 3.1 eV and that of ZFO at about 1.96 eV 20, 15. The localized surface plasmon of Au NPs is also observed around 550 nm.…”

A Self‐Powered ZnO‐Nanorod/CuSCN UV Photodetector Exhibiting Rapid Response

“…ZnO has been considered in a range of optoelectronic and electronic devices that include photovoltaics,7, 8 field‐effect transistors,9 and energy‐harvesting devices 10, 11. In recent years, there has been growing interest in using nanostructured ZnO as a UV photodetector 12–15…”

Self-Powered UV-vis Photodetector Based on ZnIn2S4/Hydrogel Interface

“…20 In the Mott Schottky plot 1/C 2 is plotted against the applied potential. The intercept of the linear portion of 1/C 2 on the x-axis gives the value of the flat band potential, and the slope of the curve gives the charge carrier density.…”