2025 (Current Year) Faculty Courses School of Engineering Department of Electrical and Electronic Engineering Graduate major in Electrical and Electronic Engineering

Imaging Materials

Academic unit or major: Graduate major in Electrical and Electronic Engineering
Instructor(s): Hiroaki Iino
Class Format: Lecture (Face-to-face)
Media-enhanced courses: -
Day of week/Period (Classrooms): 3-4 Mon (G3-202(G321)) / 3-4 Thu (G3-202(G321))
Class: -
Course Code: EEE.D421
Number of credits: 200
Course offered: 2025
Offered quarter: 3Q
Syllabus updated: Mar 19, 2025
Language: English

Syllabus

Course overview and goals

This course focuses on organic semiconductor materials as large-area thin film semiconductors for imaging devices. Topics include the electrical properties of organic semiconductors i. e., electric conduction, carrier transport, and photo carrier generation in organic materials. The course enables students to understand how to choose the suitable materials for imaging devices such as xerography, organic light emitting diode, organic transistor, and organic thin film solar cell.
Much information flows in our life, today. In this course, at first, we discuss "What is information?", imaging process, and devices are necessary for human to recognize the information. The large-area thin film semiconductors are required for imaging devices such photoreceptor of laser printers, active matrix displays, and organic light emitting diodes. Electrical quality of organic materials is worse than that of inorganic materials such as silicon, however, the organic materials have some advantages, in fact, organic semiconductors are used as photoreceptor of xerography.

Course description and aims

By the end of this course, students will be able to:
1) Understand the reason why large area thin film semiconductor is required for imaging devices.
2) Understand how to use the nature of organic materials for imaging devices such as xerography.
3) Understand basic properties of organic semiconductors.
4) Understand the relationship of chemical structure of organic semiconductors and characteristics as semiconductors.

Keywords

imaging devices, large area thin film semiconductors, xerography, active matrix, organic semiconductors, hopping transport, transient photocurrent, space charge limited current, disorder model, onsager model, organic light emitting diode, organic transistor, organic thin film solar cells

Competencies

Specialist skills
Intercultural skills
Communication skills
Critical thinking skills
Practical and/or problem-solving skills

Class flow

Towards the end of class, students are given exercise problems related to the lecture given that day to solve. To prepare for class, students should read the course schedule section and check what topics will be covered. Required learning should be completed outside of the classroom for preparation and review purposes.

Course schedule/Objectives

	Course schedule	Objectives
Class 1	What is information? -Information distribution technology and its materials-	Understand the necessary of imaging device large-area thin film semiconductor materials
Class 2	Imaging devices -Xerography-	Understand process of Xerography(Carlson method)
Class 3	Imaging devices -Liquid crystal display-	Understand necessary of active matrix display
Class 4	Thin film semiconductor materials and fabrication process	Understand thin film semiconductor materials and their fabrication process
Class 5	Electric conduction of organic materials	Understand carrier density and hopping transport in organic materials
Class 6	Evaluation method of carrier transport	Understand transient photocurrent measurement and space charge limited current
Class 7	Carrier transport properties in organic semiconductors -Amorphous materials-	Understand disorder model in organic amorphous materials
Class 8	Carrier transport properties in organic semiconductors -Crystalline materials-	Understand band and hopping transports in organic crystalline materials
Class 9	Organic semiconductor materials for xerography	Understand the requisition of organic semiconductor materials in xerography
Class 10	Photoconductivity and photo carrier generation in organic semiconductors	Understand the carrier generation of Onsager model
Class 11	Organic semiconductor materials for organic light emitting diode	Understand the requisition of organic semiconductor materials in organic light emitting diodes
Class 12	The mechanism of carrier injection from electrode to organic semiconductors	Understand contact between electrodes and organic semiconductors
Class 13	Organic semiconductor materials for organic transistors	Understand the requisition of organic semiconductor materials in organic transistors
Class 14	Organic semiconductor materials for organic thin film solar cell	Understand the requisition of organic semiconductor materials in organic thin film solar cells

Study advice (preparation and review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to course material.

Textbook(s)

Course materials will be provided.

Reference books, course materials, etc.

Course materials will be uploaded on Science Tokyo LMS.
Paul M. Borsenberger and David S. Weiss. Organic photoreceptors for xerography. New York : Marcel Dekker; ISBN-9780824701734.

Evaluation methods and criteria

Students' knowledge of imaging devices and the properties of organic semiconductor materials will be assessed.
Report 70%, exercise problems 30%.

Related courses

EEE.D301 ： Electrical and Electronics Materials
EEE.D211 ： Semiconductor Physics
EEE.D311 ： Electronic Material Science
EEE.D201 ： Quantum Mechanics
EEE.D431 ： Fundamentals of Light and Matter I
EEE.D401 ： Fundamentals of Electronic Materials
EEE.D501 ： Dielectirc Property and Organic Devices
EEE.D521 ： Advanced Materials in Information Technologies

Prerequisites

Not applicable