Electrochromic behavior in ITO and related oxides

Goldner, R. B.; Foley, G.; Goldner, E.; Norton, P. R.; Wong, K. K.; Haas, T. E.; Seward, George H.; Chapman, R. L.

doi:10.1364/ao.24.002283

Cited by 39 publications

(14 citation statements)

References 1 publication

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“…5(B). Usually, in crystalline WO 3 the optical modulation arises due to the increasing Drude type (metallic) reflection, especially in the infrared region, with increasing free electron/lithium injection [12]. In the amorphous form the optical modulation upon the double injection is through increasing absorption arising from the transfer of localized electrons between W 5+ and W 6+ sites in the material (small polaron absorption) [13].…”

Section: Discussionmentioning

confidence: 99%

Low temperature synthesis of nanocrystalline WO3 films by sol–gel process

Djaoued

Priya

Balaji

2008

Journal of Non-Crystalline Solids

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Section: Discussionmentioning

confidence: 99%

Low temperature synthesis of nanocrystalline WO3 films by sol–gel process

Djaoued

Priya

Balaji

2008

Journal of Non-Crystalline Solids

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“…We elucidate all of these effects without the assumption of aligned axes. In addition, while stress-induced birefringence in a bare optical fiber can be balanced (i.e.,''nulled'') via fiber paddles [11], we show that this nulling results in a residual birefringence when done on fibers equipped with a diattenuating aperture [14]. Our procedures and analysis fully account for these optical anisotropies in the NSOM probe.…”

mentioning

confidence: 84%

“…A complete description of our approach requires a longer publication [14]; here we supply the final analysis formalism and outline our experimental protocols. Fourier series expansion of the measured intensity (I) yields the following: It A 0 A 1 sin!t A 2 cos2!t .…”

mentioning

confidence: 99%

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Measuring Local Optical Properties: Near-Field Polarimetry of Photonic Block Copolymer Morphology

et al. 2003

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Ultrahigh molecular weight polystyrene-b-polyisoprene block copolymers (BCs), noted for their photonic behavior, were imaged using transmission near-field scanning optical microscopy (NSOM) and NSOM polarimetry. Our improved scheme for polarization modulation (PM) polarimetry, which accounts for optical anisotropies of the NSOM aperture probe, enables mapping of the local diattenuation and birefringence (with separately aligned diattenuating and fast axes) in these specimens with subdiffraction limited resolution. PM-NSOM micrographs illuminate the mesoscopic optical nature of these BC specimens by resolving individual microphase domains and defect structures.

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“…Alternatif yang lebih baik ialah teknologi smart window yang mengendalikan jumlah pancaran yang masuk [3]. Teknologi ini memanfaatkan perubahan faktor transmisi kaca, yang dengan bahan elektrokromik dicapai dengan mengatur tegangan listrik yang diberikan.…”

Section: Pendahuluanunclassified

Studi Efek Elektrokromik Pada Film Polianilin

Handojo

Simangunsong

2010

MST

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AbstrakFilm elektrokromik mempunyai spektrum transmisi yang dapat berubah secara reversibel apabila diberi tegangan listrik. Perubahan ini mengganti keadaan tidak tembus cahaya (opaque) ke keadaan bening (transparent) atau sebaliknya, sehingga film dapat digunakan untuk mengatur pancaran cahaya. Dalam makalah ini dilaporkan studi tentang film polianilin sebagai salah satu bahan aktif elektrokromik. Dalam keadaan reduksi, warna film kuning transparan dan dalam keadaan oksidasi hijau sampai biru. Divais elektrokromik yang dibuat terdiri atas lapisan kaca konduktif − film polianilin − elektrolit − kaca konduktif dengan melibatkan larutan 1.0M H 2 SO 4 . Pengukuran rapat arus menghasilkan voltamogram untuk beberapa kecepatan perubahan tegangan, sedangkan karakteristik optik diukur dengan spektroskopi UV-Vis. Untuk memeriksa sifat pengaturan cahaya, diturunkan harga intensitas pancaran matahari yang melewatinya. Diperoleh bahwa dalam keadaan reduksi, 70% pancaran menembus divais, sedangkan dalam keadaan oksidasi, pancaran tersebut tinggal 11%. Hasil pengujian reversibiltas menunjukkan bahwa umur pakainya di atas 5.000 siklus. AbstractStudy on Electrochromic Effect of Polyaniline Film. The light transmission factor of an electrochromic film changes reversibly with the application of an electrical voltage. Thereby the transparent film becomes reversibly opaque so that it may be used to control light transmission. In this paper the results of a study on polyaniline film as an electrochromic active material is reported. Polyaniline looks yellow transparent in the reduced state and turns to green-blue at its oxidized state. The electrochromic device considered in this paper was fabricated in planar configuration of ITO glass − polyaniline film − electrolyte − ITO glass which involved 1.0M H 2 SO 4 solution. The measurement of the current density yields voltamograms for several values of the rate of voltage change, while the optical characteristics were measured with ultraviolet-visible spectroscopy. To inspect the light control properties, the intensity of solar radiation propagating through the device was derived. It is found that in its reduced state, the device transmits 70% of the incoming radiation, while in the oxidized state only 11% of the radiation is left. The result of recycling test indicated that film is stable over 5,000 cycles.

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Electrochromic behavior in ITO and related oxides

Cited by 39 publications

References 1 publication

Low temperature synthesis of nanocrystalline WO3 films by sol–gel process

Low temperature synthesis of nanocrystalline WO3 films by sol–gel process

Measuring Local Optical Properties: Near-Field Polarimetry of Photonic Block Copolymer Morphology

Studi Efek Elektrokromik Pada Film Polianilin

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