This course focuses on the understanding of the dielectric materials and organic devices. Topics include microscopic origin of the polarization, relationship with macroscopic dielectric constant, dielectric dispersion, electronic conduction in the dielectrics and the application of the dielectric materials. And also include fundamentals of organic semiconductor, electronic conduction mechanism, and various organic device applications. The course enables students to understand and acquire the fundamentals of dielectric materials and devices.
Dielectrics are one of the key materials to fabricate electronic devices. Organic semiconductor basically has a nature of dielectric materials because of low carrier density. Therefore the deep understanding of the dielectric materials is also necessary to study such state-of-art devices. I hope students have an interest in the electronic phenomena in various materials.
By the end of this course, students will be able to:
1) Understand the polarization of material, the origin of dielectric constant and dielectric dispersion.
2) Give specific applications of dielectric materials.
3) Explain the model of electronic conduction in the dielectrics and organic semiconductors.
4) Explain the operating principles of various organic devices.
polarization, dielectric constant, dielectric dispersion, ferroelectric materials, organic semiconductor, carrier transport, organic transistor, organic electroluminescent device, organic solar cell
|✔ Specialist skills||Intercultural skills||Communication skills||Critical thinking skills||Practical and/or problem-solving skills|
At the beginning of each class, the lecture in the previous class will be reviewed. Students are requested to find and introduce topical papers. Students are given exercise problems related to the lectures.
|Course schedule||Required learning|
|Class 1||Polarization in ｍaterials||Understand the mechanism of polarization|
|Class 2||Polarization and dielectric properties||Understand the origin ot dielectric properties, Lorentz internal field|
|Class 3||Dielectric dispersion and complex dielectric constant||Understand the dielectric response to electric field, dielectric constant of gas and liquid|
|Class 4||Measurement technique for the dielectric polarization||Electrical measurement, modeling, SHG|
|Class 5||Current conduction in dielectric materials||Current injection from metal, Hopping conduction, SCLC|
|Class 6||Application of dielectric materials||Various dielectric materials, device application|
|Class 7||Ferroelectric materials||Understand fundamentals of ferro- and antiferro-dielectrics, piezoelectric properties and phase transition of ferroelectric materials|
|Class 8||Test level of understanding with exercise problems and summary of the first part of the course||Test level of understanding and self-evaluate achievement for classes 1–7.|
|Class 9||Fundamentals of organic semiconductor||Understand the difference between inorganic and organic materials, device fabrication|
|Class 10||Electronic structure and carrier transport in organic semiconductor||Carrier mobility, Transport mechanism, Electronic state|
|Class 11||Measurement technique for the organic semiconductor devices||Understand various electrical measurements, SHG|
|Class 12||Organic transistor (OFET)||Understand the operation mechanism of OFET, application|
|Class 13||Organic electroluminescent device (OEL)||Understand the operation mechanism of OEL, application|
|Class 14||Organic solar cell (OSC)||Understand the operation mechanism of OSC, application|
|Class 15||Other organic devices||Discussion based on related paper|
No specific textbooks. All lecture notes can be downloaded from OCW.
Denki Denshi Zairyo Kogaku, M. Iwamto ed., Ohm-sha
Based on the term end examination and quizzes carried out during the classes. Evaluation ratio between examination and quizzes are 70:30.
Nothing in particular, other than general physics of undergraduate level.