Low-cost growth of sustainable fluorine-doped SnO2 thin films as a transparent conductive electrode for field emission lighting
Başlık çevirisi mevcut değil.
- Tez No: 601930
- Danışmanlar: PROF. CHARLES E. HUNT
- Tez Türü: Doktora
- Konular: Elektrik ve Elektronik Mühendisliği, Bilgisayar Mühendisliği Bilimleri-Bilgisayar ve Kontrol, Electrical and Electronics Engineering, Computer Engineering and Computer Science and Control
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2018
- Dil: İngilizce
- Üniversite: Unıversıty Of Calıfornıa Davıs
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
Özet yok.
Özet (Çeviri)
Optically transparent and electrically conductive materials are unique in that they possess two opposing properties and they are vital in optoelectronics applications where light is either emitted or absorbed passing through such layers that transport electrons. In this work, Fluorine-doped tin oxide thin films are grown on flat and curved glass substrates via spray pyrolysis, an inexpensive and versatile thin film growth method. The main target application for this study is the use of a sustainable and transparent conductive electrode (anode) in field emission lighting; the advantage of using a transparent anode layer for this application is briefly discussed. The proposed use of a thermally conductive anode like F-doped tin oxide as an effective thermal bridge between the poorly conducting cathodoluminescent phosphors and the glass envelope of field emission lamps would alleviate heating in the phosphors and enhance the luminous efficacy of radiation of field emission lamps. Sustainability is also of importance in transparent conductors due to the scarcity of Indium used in most common transparent conductive material, Tin-doped Indium Oxide aka ITO or Indium Tin Oxide. Tin oxide stands out as the lowest cost candidate that also has a comparably good chemical and thermal stability. In addition, it is also vacuum-compatible; important because field emission lamps require high-vacuum to operate. Precursor solutions of 0.2 M SnCl4· 5H2O in methanol contained varying F-dopant level; obtained by varying the NH4F content in terms of atomic F/Sn ratio in the solution from 75%, 150% to 200%. The substrate surface temperature ranged from 300 °C, 350 °C to 400 °C effecting the electrical sheet resistance and optical transmittance of the grown F-doped tin oxide thin films. Four-point probe sheet resistance measurements, Hall effect studies, visible optical transmittance spectrometry of the thin films are undertaken to observe the electrical and optical properties, and the thin film thickness. Electrical sheet resistance values down to 4.3 Ω/square and oscillating optical transmittance patterns (>85%) are obtained for F-doped tin oxide films grown on flat glass substrates. Haacke's figure of merit for transparent conductors and thin film growth rates are shown for the studied flat-substrate samples. Thickness control of the thin films was attained by altering the volume of the precursor solution while keeping the molarity constant. Finally, the applicability of the spray pyrolysis thin film growth method on curved glass substrates is demonstrated using constant-radius watch glasses and bulb hemispheres as a basis for commercial outlook.
Benzer Tezler
- Yazdırılabilir piller için açık atmosferde kararlı polietilen oksit esaslı polimer elektrolitlerin geliştirilmesi
Development of air-stable polyethylene oxide based polymer electrolytes for printable batteries
BEYZA BATU
Yüksek Lisans
Türkçe
2025
Sakarya ÜniversitesiMetalurji ve Malzeme Mühendisliği Ana Bilim Dalı
Yükleniyor...
- Atık lityum iyon pillerdeki değerli metallerin derin ötektik çözelti kullanılarak kapalı kap mikrodalga liç prosesi ile geri kazanımı
Recovery of valuable metals from waste lithium-ion batteries using deep eutectic solvent via closed-vessel microwave leaching process
EMİNE GİZEM YILDIZ
Yüksek Lisans
Türkçe
2025
Sakarya ÜniversitesiMetalurji ve Malzeme Mühendisliği Ana Bilim Dalı
Yükleniyor...
- Nefelinli siyenit cevherinden lityum kazanım proseslerinin oluşturulması ile tesis tasarımı
Process development and plant design for lithium recovery from nepheline syenite ore
ZEYNEP ÜÇERLER ÇAMUR
Doktora
Türkçe
2025
İstanbul Teknik ÜniversitesiCevher Hazırlama Mühendisliği Ana Bilim Dalı
Yükleniyor...
- Catalytic role of low-cost natural minerals in sewage sludge gasification using different gasifying agents for hydrogen-enriched syngas production
Düşük maliyetli doğal minerallerin, hidrojenle zenginleştirilmiş sentez gazı üretimi için farklı gazlaştırma ajanları kullanılarak arıtma çamurunun gazlaştırılmasında katalitik rolü
DİLEK ALPER
- Sustainability in full service carriers and low cost carriers: A comparison of the Turkish Airlines and Pegasus Airlines
Tam hizmet taşıyıcılarda ve düşük maliyetli taşıyıcılarda sürdürülebilirlik: bir Türk Hava Yolları ve Pegasus Hava Yolları karşılaştırması
ASLİHAN KÖSE
Yüksek Lisans
İngilizce
2020
İbn Haldun ÜniversitesiHava Taşımacılığı Yönetimi Ana Bilim Dalı
Yükleniyor...