ZnO 기반 나노구조물을 이용한 하이브리드 에너지 변환 소자

다국어 초록 (Multilingual Abstract)

Nanogenerator and organic based solar cell has attracting energy
conversion devices because of non-environmental, self-powered, and
semi-permanent properties.
ZnO nanostructure based devices with wet chemical methode are
drawing much attention these days because there potential for the
production of flexible and large area devices at dramatically low costs
such as nanogenerator, organic/inorganic hybrid solar cells.
In this paper, we studied ZnO based nanogenerator and organic/
inorganic hybrid solar cells. And we designed and fabricated a natural
hybrid structure of organic solar cell and piezoelectric power generator
by using ZnO. Based on our hybrid structure, the device can generate
electrical energy independently by solar energy and by mechanical
energy such as bending. Furthermore, our hybrid device can generate
electrical energy concurrently by both solar energy and mechanical
energy, and then the output power could be significantly enhanced.

목차 (Table of Contents)

• Chapter 1. Introduction·································1
• 1.1. Energy conversion devices using nanostructures···············1
• 1.2. ZnO based nanostructures·········································4
• 1.2.1. History of ZnO nanostructures································4
• 1.2.2. Fundamental properties of ZnO and its nanostructures
• synthesis··························································5
• 1.3. Purpose of this study·············································10
• Chapter 2. Nanogenerator using ZnO nanorods····11
• 2.1. Piezoelectric nanogenerator·······································11
• 2.1.1 History····························································11
• 2.1.2. Theory of piezoelectric property·····························13
• 2.2. Fabrication nanogenerator using flexible substrate···········20
• 2.2.1. ZnO nanorod growth by wet chemical method·············20
• 2.2.2. Top electrode···················································25
• 2.3. Fabrication piezoelectric devices & tesing·····················28
• 2.4. Summery····························································35
• Chapter 3. Photovoltaic devices using ZnO thin
• film and nanorods····································36
• 3.1. Basic theory of solar cell & organic solar cell················36
• 3.2. Organic/Inorganic hybrid solar cell property improvement··45
• - iii -
• 3.2.1. Organic /inorganic hybrid solar cell fabrication···········45
• 3.2.3. Solar cell efficiency test of different inorganic
• nanostructures ·················································49
• 3.3 Buffer layer thickness dependence·······························53
• 3.4. Summery····························································57
• Chapter 4. Natural hybrid energy conversion device
• using ZnO nanostructures····························58
• 4.1. Motivation··························································58
• 4.2. Fabrication of natural organic/inorganic solar cell structure
• ······································································59
• 4.4. Power nanogenerator of hybrid energy conversion device···62
• 4.5. Solar power of hybrid energy conversion device·············66
• 4.5. Natural hybrid solar cell & nanogenerator·····················69
• 4.6. Summery····························································74
• Chapter 5. Conclusion·································75
• References··············································77