zhpsЖурнал прикладной спектроскопииZhurnal Prikladnoii Spektroskopii0514-7506B. I. Stepanov Institute of Physics of the National Academy of Scienceszhps-2167Research ArticleАННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙABSTRACTS ENGLISH-LANGUAGE ARTICLESВлияние растворителя на электрические и оптические свойства светоизлучающих полимеров на основе поли(9,9-ди-н-октилфлуоренил-2,7-диила)Solvent Effect on Electrical and Optical Properties of Poly(9,9-di-n-Octylfluorenyl-2,7-diyl)-Based Polymer Light-Emitting ApplicationsSabahF. A.SabahF. A.

Инженерный колледж.

Багдад

Fayroz A. Sabah - Department of Laser and Optoelectronics Technical Engineering, College of Technical Engineering, Alfarahidi University.

Baghdad

fayroz.arif@gmail.comRazakI. A.RazakI. A.

Пенанг

Ibrahim Abdul Razak - School of Physics, University Sains Malaysia.

11800 USM, Penang

arazaki@usm.myKabaaE. A.KabaaE. A.

Институт исследований и технологий нанооптоэлектроники.

Пенанг

Institute of Nano Optoelectronics Research and Technology (INOR), University Sains Malaysia.

11800 USM, Penang

RahimN. A.A.RahimN. A.A.

Арау, Перлис

Nor Azura Abdul Rahim - Faculty of Chemical Engineering Technology, University Malaysia Perlis (UniMAP).

Kompleks Pengajian Jejawi 2, Arau, Perlis

Университет Аль-ФарахидиAlfarahidi UniversityУниверситет Сайнс МалайзияUniversity Sains MalaysiaУниверситет Малайзии Перлис (UniMAP)University Malaysia Perlis (UniMAP)2026300320269322909Copyright © Sabah F.A., Razak I.A., Kabaa E.A., Rahim N.A., 20262026Sabah F.A., Razak I.A., Kabaa E.A., Rahim N.A.Sabah F.A., Razak I.A., Kabaa E.A., Rahim N.A.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/2167

Светодиоды (PLED) на основе полимера поли(9,9-ди-н-октилфлуоренил-2,7-диила) (PFO) синтезированы с использованием толуола и тетрагидрофурана (THF). PLED на основе PFO получены методом ракельного нанесения на полианилин (изумрудное основание) (PANI)/ITO, после чего исследованы структурные, морфологические, топографические и электрические свойства полимерных пленок. Изучены химические связи, спектры поглощения и фотолюминесценции (ФЛ) образцов, а также влияние растворителя-прекурсора на характеристики PLED на основе PFO. Показано, что пленка из толуола и PFO (с более высокой вязкостью и шероховатостью поверхности) демонстрирует более высокую интенсивность ФЛ. Полярность влияет на длину волны излучения, вызывая сдвиг в красную сторону спектра ФЛ в пленке из THF и PFO, что объясняется более высоким индексом полярности. Установлено, что давление пара вызывает переключение интенсивности ФЛ для обоих PLED на основе PFO. Результаты также выявили низкое качество цветопередачи в зеленом излучении в диапазоне 2.2–2.4 эВ. Растворитель-прекурсор для синтеза PFO можно рассматривать как фактор, регулирующий излучение PLED на основе PFO.

Poly(9,9-di-n-octylfluorenyl-2,7-diyl) (PFO) polymer-based light-emitting diodes (PLEDs) were synthesized using toluene and tetrahydrofuran (THF). The PFO-based PLEDs were deposited onto polyaniline (emeraldine base) (PANI)/ITO using the doctor blade technique, followed by structural, morphological, topographical and electrical properties of the polymer films were examined. The chemical bonds, absorbance and photoluminescence (PL) spectra of the samples were also investigated, and the effect of the precursor solvent on these characteristics of PFO-based PLEDs was studied, revealing that the toluene-PFO film (higher viscosity and surface roughness) displayed a higher PL intensity. Polarity affects the emission wavelength by causing a red shift in the PL spectra to the THF-PFO film, which is attributable to its higher polarity index. Vapor pressure was shown to cause switching of the PL intensity for both PFO-based PLEDs. The results also revealed poor color quality in the green emission at 2.2 to 2.4 eV; thus, viscosity, vapor pressure and polarity of the solvents strongly affect the characteristics of PFO thin films. The precursor solvent for the synthesis of PFO can be considered a tuning factor for the emission of PFO-based PLED.

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