Effect of moisture (in solid polymer electrolyte) on the photosensitivity of conducting polypyrrole sensitized by prussian blue in solid-state photocells
TL;DR: In this article, the effect of small concentration of dispersed prussian blue (PB) [in solid polymer electrolyte viz polyvinyl alcohol (PVA) with phosphoric acid] on the photocurrents were studied.
About: This article is published in Synthetic Metals.The article was published on 2000-04-17. It has received 29 citations till now. The article focuses on the topics: Electrolyte & Polypyrrole.
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TL;DR: The most important examples from major classes of electrochromic materials namely transition metal oxides, Prussian blue, phthalocyanines, viologens, fullerenes, dyes and conducting polymers (including gels) are described in this article.
743 citations
TL;DR: The thermal stability and degradation of poly(vinyl alcohol) (PVA), PVA+H 3 PO 4 (solid polymer electrolyte, SPE), pVA containing methylene blue (MB) dye and SPE+MB were studied by TG/DTA/DTG and DSC techniques as discussed by the authors.
81 citations
TL;DR: In this article, a simple method for covering titanium dioxide particles with a polythiophene film by chemical preparation was developed, and the resulting nanocomposites consisted of a titanium dioxide core with a grain size of 25-250 nm and a polystiophene shell between 1 and 2 nm thickness.
77 citations
TL;DR: In this article, the PANI dispersions were deposited in the form of the film on indium-tin-oxide (ITO) coated glass by dip-coating and the morphology of these PANIs have been studied by scanning electron micrograph (SEM), optical absorption by UV-VIS spectroscopy and the cyclic voltammetry properties of these films in non-aqueous electrolyte (0.01m HCl/acetonitrile) and the interesting results are reported in this communication.
70 citations
TL;DR: The paper gives a review of publications on polymers with conjugated matrices which incorporate metallocene complexes with two cyclopentadienyl ligands and their derivatives, as well as hemi-metallocenecomplex complexes, as pendant groups or inside the principal chain.
65 citations
References
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TL;DR: In this paper, a flexible polyethylene terephthalate (PET) based light-emitting diodes (LEDs) were constructed from conjugated polymers, using poly(ethylene-terephthalates) as the substrate, soluble poly-aniline as the hole-injecting electrode, substituted poly(1,4-phenylene-vinylene) as electroluminescent layer and calcium as the electron-injection top contract.
Abstract: THE recent fabrication of light-emitting diodes (LEDs) from conjugated polymers1,2demonstrates the technological potential of this class of electronic materials. A variety of colours are possible, because the wavelength of luminescence emission can be chemically tuned during synthesis1–4. In addition, the mechanical properties of polymers suggest that light-emitting structures can be made that are more flexible than their inorganic counterparts, provided appropriate materials can be found for the substrate and electrodes. Here we report the fabrication of a fully flexible LED using poly(ethylene terephthalate) as the substrate, soluble poly-aniline as the hole-injecting electrode, a substituted poly(1,4-phenylene-vinylene) as the electroluminescent layer and calcium as the electron-injecting top contract. The structure is mechanically robust and may be sharply bent without failure. The LED is easily visible under room lighting and has an external quantum efficiency of about 1%. With a turn-on voltage for light emission of 2–3 V, the 'plastic' LED demonstrates that this unique combination of optical, electrical and mechanical properties can be used to make novel structures that are compatible with conventional devices.
2,513 citations
TL;DR: In this article, the authors reported visible light emission from Shottky diodes made from semiconducting polymers, confirming the discovery by the Cambridge group [Nature 347, 539 (1990)].
Abstract: We report visible light emission from Shottky diodes made from semiconducting polymers, confirming the discovery by the Cambridge group [Nature 347, 539 (1990)]. Our results demonstrate that light‐emitting diodes can be fabricated by casting the polymer film from solution with no subsequent processing or heat treatment required. Electrical characterization reveals diode behavior with rectification ratios greater than 104. We propose that tunneling of electrons from the recitifying metal contact into the gap states of the positive polaron majority carriers dominates current flow and provides the mechanism for light emission.
2,038 citations
TL;DR: In this article, a stable organic electroluminescent devices based on vapor-deposited Alq thin films have been achieved, which are derived from several factors including: (1) a multilayer thin-film structure with a CuPc stabilized hole-injection contact, (2) a hole-transport diamine layer using a naphthyl substituted benzidine derivative, and (3) an ac drive wave form.
Abstract: Highly stable organic electroluminescent devices based on vapor‐deposited Alq thin films have been achieved. The improvement in stability is derived from several factors including: (1) a multilayer thin‐film structure with a CuPc stabilized hole‐injection contact, (2) a hole‐transport diamine layer using a naphthyl‐substituted benzidine derivative, and (3) an ac drive wave form. These emissive devices have shown an operational half‐lifetime of about 4000 h from an initial luminance of 510 cd/m2.
1,559 citations
1,014 citations
01 Jan 1993
TL;DR: In this article, electrical and electrochemical properties of ion conducting polymers are discussed. But they do not consider the properties of polymers with polymer electrolytes, as they do in this paper.
Abstract: Preface. Electrical and electrochemical properties of ion conducting polymers. Electrical and electrochemical properties of electronically conducting polymers. Highly-conductive polymer electrolytes. Solvation mechanisms in low molecular weight polyethers. Lithium batteries with polymer electrodes. Lithium polymer batteries. Electrochromic devices. Laminated electrochromic displays and windows. Functionalized conductive polymer membranes/films. Electroactive polymers in chemical sensors.
824 citations