zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-1449Research ArticleАННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙABSTRACTS ENGLISH-LANGUAGE ARTICLESХарактеристики тонкой пленки нанокристаллического сульфида свинца для фотодетектора видимого светаFabrication and Characterization of Nanocrystalline Lead Sulfide Thin Film for Visible Light PhotodetectorBhattS. V.BhattSandip V.

Валлабх Видьянагар, Гуджарат

Department of Applied and Interdisciplinary Sciences (CISST)

Vallabh Vidyanagar, Gujarat

PatelR. V.PatelRakesh V.

Валлабх Видьянагар, Гуджарат

Department of Applied and Interdisciplinary Sciences (CISST)

Vallabh Vidyanagar, Gujarat

drrvpatel@gmail.comPatelS. R.PatelSefali R.

Валлабх Видьянагар, Гуджарат

Department of Applied and Interdisciplinary Sciences (CISST)

Vallabh Vidyanagar, Gujarat

JoshiK.JoshiKrishna

Валлабх Видьянагар, Гуджарат

Department of Applied and Interdisciplinary Sciences (CISST)

Vallabh Vidyanagar, Gujarat

JadavА.JadavAkshay

Валлабх Видьянагар, Гуджарат

Department of Applied and Interdisciplinary Sciences (CISST)

Vallabh Vidyanagar, Gujarat

PatelМ.PatelMonank

Валлабх Видьянагар, Гуджарат

Department of Applied and Interdisciplinary Sciences (CISST)

Vallabh Vidyanagar, Gujarat

DesaiD.DesaiDhruv

Валлабх Видьянагар, Гуджарат

Department of Applied and Interdisciplinary Sciences (CISST)

Vallabh Vidyanagar, Gujarat

ChakiS. H.ChakiS. H.

Валлабх Видьянагар, Гуджарат

Department of Applied and Interdisciplinary Sciences (CISST)

Vallabh Vidyanagar, Gujarat

Университет Сардара ПателяSardar Patel University202326112023905813813Copyright © Bhatt S.V., Patel R.V., Patel S.R., Joshi K., Jadav А., Patel М., Desai D., Chaki S.H., 20232023Bhatt S.V., Patel R.V., Patel S.R., Joshi K., Jadav А., Patel М., Desai D., Chaki S.H.Bhatt S.V., Patel R.V., Patel S.R., Joshi K., Jadav A., Patel M., Desai D., Chaki S.H.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://zhps.ejournal.by/jour/article/view/1449

Изготовлен высокоэффективный фотодетектор видимого света с использованием тонких пленок нанокристаллического сульфида свинца (PbS). Тонкие пленки нанесены на стеклянные подложки методом химического осаждения в ванне с помощью водного раствора ацетата свинца и тиомочевины. Методом рентгеновской дифракции выявлена кубическая кристаллическая структура осажденных пленок с фазой PbS. Оптические характеристики исследованы с помощью УФ-видимойспектроскопии в диапазоне 400–1000 нм. Спектры поглощения использованы для расчета спектральной зависимости ширины запрещенной зоны, показателя преломления, коэффициента экстинкции, диэлектрической проницаемости, оптической и электрической проводимости. Фототок измерен при освещении пленок источниками светодиодов определенной длины волны. Качество тонкой пленки PbS как фотодетектора исследовано путем определения времени нарастания, времени затухания, фоточувствительности, удельной обнаружительной способности и внешней квантовой эффективности.

This study focuses on the preparation of a high-performance visible light photodetector using nanocrystalline lead sulphide (PbS) thin films. The thin films were deposited onto glass substrates via the chemical bath deposition technique, utilizing an aqueous solution of lead acetate and thiourea. The structural study carried out on the deposited films by X-ray diffraction exhibited a cubic crystal structure with a PbS phase. The optical characteristics of PbS thin films were investigated employing UV-Vis absorption spectroscopy. The absorption spectroscopy was carried out in the wavelength range of 400–1000 nm. The absorbance spectra were utilized to calculate the spectral dependence of several optical parameters: band gap, refractive index, extinction coefficient, dielectric constant, and optical and electrical conductivity. The photocurrent was measured in nanocrystalline PbS thin films under the illumination of specific LED wavelength sources. The quality of the PbS thin film as a photodetector was investigated by determining the rise time, decay time, photosensitivity, specific detectivity, and external quantum efficiency.

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The authors declare that there are no conflicts of interest present.