Détermination Spectroscopique des Grandeurs Optoélectroniques du SnO2 Dopé Elaboré par Spray Ultrasonique

الموضوعات

علوم بحتة وطبيعية

الملخص

Abstract:In this work, undoped tin dioxide (SnO2) and fluorine doped tin dioxide (SnO2: F) films were elaborated with spray ultrasonic technique. SnCl2 and NH4F were used as sources of SnO2 and fluorine doping respectively. The films were deposited on 480°C heated glass. Effects of fluorine doping and films thickness on the optical, structural and opto-electrical properties of undoped and fluorine doped SnO2: F (FTO) thin films were investigated. X-ray diffraction (XRD) patterns showed that both SnO2 and SnO2: F films were polycrystalline with tetragonal rutile structure. The preferential orientation for SnO2 was along (211) plane whereas SnO2: F preferential orientations were along (200) planes. The calculated crystallite sizes were in the average 11.57–28.16 nm. Optical transmittance spectra of the films showed high transparency of about 73-87% in visible region. The optical gap, for SnO2 and SnO2: F films, was found to be in the range 3.62-3.93 eV. Plasma frequencies of the films were found to be in the range 1.317×1015-1.395×1015 Hz leading to estimated optical carrier concentration in the range of 1.575×1021-1.767×1021cm-3.The electrical study reveals that the films have n-type electrical conductivity and depend upon fluorine concentration. The electrical carrier concentration was found to be in the range 2.04×1019–0.04×1019 cm-3 which was lower than the optically estimated one. Calculated figure of merit for FTO thin films revealed maximum value about 13.0410-3 (-1) at =700 nm at fluorine concentration 6 wt. % for 440 nm thickness. FTIR spectra confirmed the formation of SnO2, after fluorine doping a new vibration mode of Sn-F was appeared around 710 cm-1. Contact angle on the FTO films surfaces was measured which was in the range of 66-109°. CA measured values reveals that the films surfaces have hydrophobicity properties. The elaborated FTO thin films are promising to be used as window layer in solar cells and as self cleaning materials.

روابط وملفات

التعريف والنوع

رقم الوثيقة

0e86c85a-2fed-40b4-b3de-5ca6424f3a6b

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf text

أسماء الملفات

228013_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"Boubaker Ben Hauoa","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Soumaia Abbas","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

French

المصدر والدورية

اسم المصدر

Détermination Spectroscopique des Grandeurs Optoélectroniques du SnO2 Dopé Elaboré par Spray Ultrasonique

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

Boubaker Ben Hauoa

الإعداد

Soumaia Abbas

الاقتباسات الببليوغرافية