초록 ▼

√ 연구개발의 타당성 검증 및 세부연구계획 수립
• 특허분석을 바탕으로 인공원자에 대한 기술 동향 및 취약점을 파악하고 ‘연속재단 공유결합성 인공원자’의 원천기술화 전략과 연구추진 계획을 수립
• 산·학·연 자문위원단 구성을 통한 연구개발 대상소재 및 소자의 기술수준 분석 및 사업화 가능성 검토
• 본 과제의 성공적인 연구개발을 위한 인력 영입 및 연구팀 구성

√ 선행연구를 통한 ‘연속재단 공유결합성 인공원자 및 응집소재’ 구현 가능성 검증
• 이론/설계
- 양자물성계산 기

√ 연구개발의 타당성 검증 및 세부연구계획 수립
• 특허분석을 바탕으로 인공원자에 대한 기술 동향 및 취약점을 파악하고 ‘연속재단 공유결합성 인공원자’의 원천기술화 전략과 연구추진 계획을 수립
• 산·학·연 자문위원단 구성을 통한 연구개발 대상소재 및 소자의 기술수준 분석 및 사업화 가능성 검토
• 본 과제의 성공적인 연구개발을 위한 인력 영입 및 연구팀 구성

√ 선행연구를 통한 ‘연속재단 공유결합성 인공원자 및 응집소재’ 구현 가능성 검증
• 이론/설계
- 양자물성계산 기반 전자재단 개념 검증 완료 (개념특허 출원 1건 준비중)
- SVM 기반 머신러닝 활용한 인공원자 합성 가능성 검토 및 방법 확립
- 머신러닝 포텐셜을 이용한 인공원자의 거대 시스템 분자동역학 계산 방법 확립
• 인공원자 합성
- 반응경로 탐색을 통한 중간체 기반 공유결합성 인공원자 합성 新방법론 확보 및 이를 적용한 공유결합성 인공원자 개발 성공 (원천소재 특허 2건 출원, 3건 준비중)
- 연속재단을 위한 인공원자 노출면 제어 新방법론 확보 (길목특허 1건 출원)
• 인공원자 및 인공원자 응집소재 분석
- 단일 인공원자 및 응집소재 분석의 국제 표준화 확보방안 검토
• 공유결합성 인공원자 응용
- 인공원자의 전자재단 기반 전계발광소자 및 태양전지 효율증대
- 인공원자의 전자재단을 통한 산화원천방지 전략 확보

(출처 : 보고서 요약서 3p)

Abstract ▼

Ⅳ. Results of Planning Research
• We discuss the challenges in the development of the covalent artificial atom materials. Therefore, we will firstly study III-V (V=P((phosphide), As(arsenide)) artificial atoms and then, focus on the artificial atoms based on III-V(V=N, nitride), IV(Si, Ge). Consi

Ⅳ. Results of Planning Research
• We discuss the challenges in the development of the covalent artificial atom materials. Therefore, we will firstly study III-V (V=P((phosphide), As(arsenide)) artificial atoms and then, focus on the artificial atoms based on III-V(V=N, nitride), IV(Si, Ge). Considering the marketability, we will focus on electroluminescence devices with the covalent artificial atoms in the first stage and extend to the research on solar cells, photodetector, and laser devices in the second stage. Finally, we will open up a new field of devices such as optical information communication devices(Li-fi) based on the newly developed artificial atoms.

• Patent analysis
1) Continuously tailored artificial atoms
: No patent has been searched for continuously tailored artificial atoms with covalency in the bonding nature. Patents related to the modification of the energy level for ionic artificial atoms have been searched. However, the ligands on outer layer used in these patents were randomly selected. Thus, the patent barriers are very low.

2) Synthesis of covalent artificial atoms
There have been only a few patents found on other covalent artificial atoms such as GaP, GaAs, GaSb, InSb, GaN, Si, and Ge. Therefore, it is highly to acquire core technology.

3) Machine learning for the synthesis of artificial atoms.
: No patent has been searched for machine learning for the synthesis of covalent artificial atoms. This technology can be applied to the synthesis of colloidal nanoparticles (metal, magnetic, and oxide, etc.) based on wet chemistry. Therefore, we expect that the ripple effects must have been significant.

• Settings for the project contents based on the preliminary results
1) Continuous tailoring of energy level
: We verify our concept of continuous tailoring of energy level by controlling dipole size for outer layer on the artificial atoms for theoretical calculation. As a result, we apply for one concept patent during the planning research. We also experimentally demonstrate the possibility of continuos tailoring of energy level through wet process based outer layer control. However, it has been confirmed that there is a limit to continuously control the energy levels experimentally. Therefore, we propose a new method called ‘continuously control the energy levels based on facet control on the artificial atoms’and verified the possibility of this method via calculation and experiment.

2) Reaction pathway of artificial atom with covalent bonding nature
: First, we propose a synthetic method suitable for covalent artificial atom. We realize that the covalent artificial atoms could be synthesized based on intermediates. Unlike ionic artificial atoms with having simple synthesis, covalent artificial atom synthesis is complex, which required the study of reaction pathway. In planning research, we successfully synthesize facet controlled InP artificial atoms based on intermediate seeds. Synthesized tetrahedral and tetrapod shaped InP artificial atoms consist of (111)-rich facet and (110)-rich facet, respectively. We apply for two patents and submit to the journal during the planning research.

3) Review of machine learning method
: During the planning research period, we model the relationship between "atomic structure - total energy" using Gaussian process and artificial neural network. In addition, we studied the machine learning potential for the thermal behavior of InP intermediates and performed molecular dynamics calculations using them, which shows that it is possible to simulate a long time simulation of a large system that is difficult to access by conventional DFT calculation.

4) Analyses of artificial atom and assembled artificial atom materials : We investigate evaluation methods of optical, chemical, physical properties of covalent artificial atoms and artificial atom assembles. Furthermore, we identify trends in global standardization work that have recently been proposed in relation to the evaluation of nanomaterials.

5) Applications using the artificial atom assembles
: We select opto-electronic devices (LED, solar cells, lasers, and etc.) using covalent artificial atoms. Based on the expected physical properties of covalent artificial atoms, we investigate the possibility of overcoming the limits of previously studied application devices in view of reduction of Auger recombination in LED devices and fabrication of solar cells based on multiple charge generation. We also propose a new artificial atom-based wireless optical communication system (Li-fi).

• Settings for the details
1) System for this project
: We devide the research members into three teams according to the related themes for the systematic projects, including “Team Reaction Pathway Discovery’, ‘Team Synthesis Discovery’, ‘Team Physical Property Discovery’, and ‘Team Application discovery’. In order to pursue a successful project, we reorganized the members into ‘Design Group’, ‘Synthesis and Applications Group’, and ‘Material Analyses group’. Also, we add Professor Jeong Ho Cho who is an expert in artificial atom based applications working at Yonsei University and Sang Ho Oh who is an expert in direct imaging of the artificial atom surfaces working at SKKU as a co-researcher according to the necessity for the successful project.

(출처 : SUMMARY 10p)

목차 Contents

• 표지 ... 1
• 제출문 ... 2
• 보고서 요약서 ... 3
• 요약문 ... 4
• SUMMARY ... 9
• CONTENTS ... 14
• 목차 ... 15
• 제 1 장 先기획연구 개요 ... 16
• 1. 先기획연구의 목적, 필요성 및 범위 ... 16
• 2. 대상 소재기술의 정의 및 개념 ... 17
• 제 2 장 기술개발 현황 및 조사․분석 ... 19
• 1. 국내․외 기술개발 현황 ... 19
• 2. 선행 연구 조사․분석 및 시사점 ... 20
• 제 3 장 기술개발 목표 및 내용 ... 24
• 1. 원천특허 포트폴리오 ... 24
• 2. 연구개발내용 및 범위 ... 34
• 3. 기존 기술과의 차별성 및 원천성 ... 36
• 4. 국가 소재 R&D 전략과의 연계성 및 부합성 ... 37
• 5. 先연구내용 및 결과 ... 38
• 제 4 장 先기획연구 활동 추진 내용 ... 82
• 1. 先기획연구 추진 체계 ... 82
• 2. 先기획연구 방법론 ... 93
• 3. 先기획연구 활동 내용 ... 94
• 제 5 장 기대성과 및 활용 계획 ... 100
• 1. 기대성과 ... 100
• 2. 상용화 예상 분야 ... 101
• 3. 경제성 분석 ... 103
• 제 6 장 참고문헌 ... 105
• 끝페이지 ... 108