A synergistic assembly of nanoscale lamellar photoconductor hybrids

Abstract

Highly ordered nanostructured organic/inorganic hybrids offer chemical tunability, novel functionalities and enhanced performance over their individual components. Hybrids of complementary p-type organic and n-type inorganic components have attracted interest in optoelectronics, where high-efficiency devices with minimal cost are desired. We demonstrate here self-assembly of a lamellar hybrid containing periodic and alternating 1-nm-thick sheets of polycrystalline ZnO separated by 2-3 nm layers of conjugated molecules, directly onto an electrode. Initially the electrodeposited inorganic is Zn(OH)(2), but pi-pi interactions among conjugated molecules stabilize synergistically the periodic nanostructure as it converts to ZnO at 150 degrees C. As photoconductors, normalized detectivities (D(*)) greater than 2x10(10) Jones, photocurrent gains of 120 at 1.2 V microm(-1) and dynamic ranges greater than 60 dB are observed on selective excitation of the organic. These are among the highest values measured for organic, hybrid and amorphous silicon, making them technologically competitive as low-power, wavelength-tunable, flexible and environmentally benign photoconductors.

Fabrication and characterization of a nanocomposite hydrogel for combined photocatalytic degradation of a mixture of malachite green and fast green dye

“…They bridge the gap between organic and inorganic counterparts and also overcome the nonuniformity at the structural level [18][19][20][21]. A major breakthrough occurred when Haraguchi et al prepared the first ever nanocomposite hydrogel using free radical polymerization.…”

Stepwise Self‐Assembly of P3HT/CdSe Hybrid Nanowires with Enhanced Photoconductivity

“…Heterojunctions of electron donor and acceptor materials play an important role in optoelectronic devices, such as light-emitting diodes, [1] photodetectors, [2][3][4] and solar cells. [5][6][7] Hybrid heterojunctions composed of a p-type conjugated polymer and n-type inorganic crystals have attracted much interest recently, [1,4,[8][9][10][11] and they combine the merits of inorganic nanocrystals and conjugated polymers.…”

Optical Waveguiding Organic Nanorods Coated with Reversibly Switchable Fe(II) Spin Transition Nanoparticles

“…Bottom-up nanofabrication of self-assembled multifunctional nanoobjects and study of their uncharted physical properties at the nanoscale level are an active and sophisticated research area of nanoscience and technology [1][2][3][4][5][6][7][8][9][10][11][12][13]. Particularly programming the in situ growth of selfassembled organic and inorganic nanostructures from different molecular components and also their integration to form hybrid nanoscale objects in the same pot is a less explored area.…”

“…Particularly programming the in situ growth of selfassembled organic and inorganic nanostructures from different molecular components and also their integration to form hybrid nanoscale objects in the same pot is a less explored area. A successful groundwork in this discipline might lead to new advanced functional hybrid nanomaterials capable of performing a sensing, electronic, photonic, and mechanical function [1][2][3][4][5][6][7][8][9][10][11][12][13]. For example integration of magnetically bistable inorganic nanoparticles (NPs) and optical wave guiding organic nanostructures could facilitate remote manipulation of the light sensitive spin states of individual NPs through guided laser light.…”