Архів / Том LXX 2022

Юлія СТЕЦІВ, Михайло ЯЦИШИН, Олександр РЕШЕТНЯК

Львівський національний університет імені Івана Франка, вул. Кирила і Мефодія, 6, 79005 Львів, Україна
e-mail: yuliia.stetsiv@lnu.edu.ua

DOI: https://doi.org/10.37827/ntsh.chem.2022.70.026

ШИРИНА ЗАБОРОНЕНОЇ ЗОНИ ТА ПОКАЗНИК ЗАЛОМЛЕННЯ ПОЛІАНІЛІНУ.

Синтезовано плівки поліаніліну (ПАн), доповані цитратною кислотою, на поліети-леновому субстраті шляхом хімічної окиснювальної полімеризації з використанням амоній пероксидисульфату як окисника. Досліджено вплив товщини плівок ПАн на оптичні властивості отриманих матеріалів. Визначено такі оптоелектронні параметри: оптична ширина забороненої зони та показник заломлення синтезованих зразків плівок. Розглянуто різні методи визначення енергії енергетичної щілини (метод Тауца та підгонки спектра поглинання). З’ясовано, що ширина забороненої зони прямого дозволеного переходу ПАн зменшується зі збільшенням товщини осаджених плівок ПАн.
На основі кореляцій між оптичною енергією ширини забороненої зони та показником заломлення напівпровідників з використанням співвідношень Мосса (M), Равіндра (R), Равіндра-Гупта (R-G), Редді-Ахаммеда (R-A), Герве-Вандамме (G-V), Кумар-Сінгха (K-S), Аннані (A) та Даффі-Редді (D-R) розраховано значення показника заломлення плівок ПАн і порівняно ці результати зі значеннями, отриманими за результатами експерименту. Визначення оптичної енергії ширини забороненої зони та показника заломлення проводили за експериментальними даними за допомогою методу Тауца та підгонки спектрів поглинання (ПСП).

Ключові слова: поліанілін, плівки, показник заломлення, ширина забороненої зони

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Як цитувати:

СТЕЦІВ Ю., ЯЦИШИН М., РЕШЕТНЯК О. ШИРИНА ЗАБОРОНЕНОЇ ЗОНИ ТА ПОКАЗНИК ЗАЛОМЛЕННЯ ПОЛІАНІЛІНУ. Праці НТШ. Хім. Наук. 2022 Т. LXX. С. 26-42.

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