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MEMD Group – memd.cankaya.edu.tr. Developing Th in F ilms U sing a V acuum E vaporation S ystem and M easurements. Student Team: Sedef ÇALIŞKAN Zeynep KORKMAZ Supervisors: Prof. Dr. Ziya Burhanettin GÜVENÇ Prof. Dr. Celal Zaim ÇİL Yrd. Doç. Dr. Göknur CAMBAZ BÜKE. - PowerPoint PPT Presentation
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DEVELOPING THIN FILMS USING A VACUUM EVAPORATION SYSTEM AND MEASUREMENTS
Student Team:Sedef ÇALIŞKANZeynep KORKMAZ
Supervisors:Prof. Dr. Ziya Burhanettin GÜVENÇProf. Dr. Celal Zaim ÇİLYrd. Doç. Dr. Göknur CAMBAZ BÜKE
MEMD Group – memd.cankaya.edu.tr
Outline• Aim of the project• PVD System• Methodology to be followed
MEMD Group – memd.cankaya.edu.tr
AimTo study the electrical and optical properties of thin films produced by using physical vapor deposition (PVD) system.
MEMD Group – memd.cankaya.edu.tr
Thin Film Technology• Layer of material ranging from nanometer (monolayer) to
several micrometers in thickness.
• Main applications: Electronic devices and optical coatings
MEMD Group – memd.cankaya.edu.tr
1. Flexible Solar Cell 2. OLED 3. Transistor
1. http://gotpowered.com/2011/ge-develops-thin-film-photovoltaic-panels/2. http://pinktentacle.com/2007/05/flexible-full-color-organic-el-display/3. http://www.sciencecodex.com/silicon_spin_transistors_heat_up_and_spins_last_longer
Deposition Technologies• Chemical Reaction
• CVD• Electrodepositon• Epitaxy• Thermal oxidation
• Physical Reaction• PVD
• Evaporating• Sputtering
• Casting
Substrate
MEMD Group – memd.cankaya.edu.tr
Deposition source
Why PVD?• PVD processes are environmentally friendly• Cost effective• Suitable for electrical devices• Low process temperatures (with the help of pressure)• Lower process risk
MEMD Group – memd.cankaya.edu.tr
PVD Technology
• Sources are heated to their melting points
• Evaporated molecules freely move in the chamber
• Atoms condense on substrate
MEMD Group – memd.cankaya.edu.tr
MEMD Group – memd.cankaya.edu.tr
Thin film
Power Supply
Substrate Parameters
Process Parameters• Current• Time• Pressure
Material Selection• Substrate• Source
Our PVD System from VAKSİS• High technology
company• Designing and
manufacturing • Vacuum system• Vacuum component• Vacuum coating
system
MEMD Group – memd.cankaya.edu.tr
Our PVD System from VAKSİS1 Torr = 1 mm Hg1 mm Hg = 133.3 Pa
MEMD Group – memd.cankaya.edu.tr
http://microlab.berkeley.edu/labmanual/chap6/vacuum.pdf
Characterization• Electrical • Optical• Structural - microstructure
MEMD Group – memd.cankaya.edu.tr
Summary of the MethodologyDetermination of the starting parameters of PVD
(P, T, t, substrate, target)
Deposition of the Thin Film by PVD
Electrical – Optical - Structural Characterization of these thin films
Studying the effect of process parametersOptimization
Simple Device Fabrication and tests
MEMD Group – memd.cankaya.edu.tr
Near Future Plan• Material Selection• Ordering PVD System (available in two months)• Studying electrical and optical characterization methods• Design of the characterization set-up
MEMD Group – memd.cankaya.edu.tr
Thank You for Listening
MEMD Group – memd.cankaya.edu.tr
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