| Publication Year | Author | Title | Publication Title | DOI | Url | Pages | Issue | Volume |
|---|---|---|---|---|---|---|---|---|
| 2015 | Shin, H; Kang, H; Kim, JH; Wang, YF; Kim, S; Kay, KY; Park, J | Synthesis and Electroluminescence Property of New Hexaphenyl Benzene Derivatives Including Emitting Core for OLED | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2015.11260 | 8289-8294 | 10 | 15 | |
| 2021 | Duan, LF; Wang, GH; Duan, Y; Lei, DL; Qian, FL; Yang, QM | Design Simulation and Preparation of White OLED Microdisplay Based on Microcavity Structure Optimization | JOURNAL OF SPECTROSCOPY | 10.1155/2021/5529644 | 2021 | |||
| 2017 | Ryu, J; Jo, MJ; Jung, H; Lee, H; Shin, D; Park, M; Kay, KY; Park, J | Synthesis and electroluminescent properties of diazocine derivatives | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 10.1080/09273948.2017.1338890 | 77-84 | 1 | 651 | |
| 2017 | Lee, S; Kim, B; Jung, H; Shin, H; Lee, H; Lee, J; Park, J | Synthesis and electroluminescence properties of new blue dual-core OLED emitters using bulky side chromophores | DYES AND PIGMENTS | 10.1016/j.dyepig.2016.08.010 | 255-261 | 136 | ||
| 2019 | Kang, SK; Woo, J; Lee, SE; Kim, YK; Yoon, SS | Organic Light-Emitting Diodes based on Benzo[q]quinoline Derivatives | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 10.1080/15421406.2019.1645470 | 114-123 | 1 | 685 | |
| 2021 | Duan, LF; Yang, HQ; Wang, GH; Duan, Y | Preparation of 8-hydroxyquinoline aluminum nanomaterials to enhance properties for green organic light-emitting diode devices | JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY | 10.1002/jsid.986 | 466-475 | 6 | 29 | |
| 2015 | Lee, SB; Park, SN; Kim, C; Lee, HW; Lee, HW; Kim, YK; Yoon, SS | Synthesis and electroluminescent properties of 9,10-diphenylanthracene containing 9H-carbazole derivatives for blue organic light-emitting diodes | SYNTHETIC METALS | 10.1016/j.synthmet.2015.02.037 | 174-179 | 203 | ||
| 2018 | Kang, S; Lee, H; Jung, H; Shin, D; Park, M; Kay, KY; Park, J | Synthesis and Electroluminescence Properties of New Type Multi-Chromophore Emitting Materials for Organic Light-Emitting Diodes | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2018.14947 | 2162-2165 | 3 | 18 | |
| 2019 | Cho, S; Hwang, N; Lee, SE; Kim, YK; Yoon, SS | Highly Efficient Blue Organic Light-Emitting Diodes Based on Diarylamine-Substituted Pyrene Derivatives | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2019.15929 | 1056-1060 | 2 | 19 | |
| 2020 | Woo, J; Kang, SK; Han, JH; Kim, KJ; Moon, YJ; Kim, YK; Yoon, SS | Red Phosphorescent Platinum(II) Complexes with Tetradentate Pyridine-Containing Ligands for Organic Light Emitting Diodes | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2020.18758 | 6669-6674 | 11 | 20 | |
| 2017 | Kang, S; Jung, H; Lee, H; Shin, D; Park, M; Kay, KY; Park, J | Synthesis and electroluminescence property of new type emitting materials including diazocine for OLEDs | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 10.1080/15421406.2017.1338490 | 35-41 | 1 | 651 | |
| 2020 | Kang, SK; Woo, J; Han, JH; Kim, KJ; Lee, H; Kim, YK; Yoon, SS | Platinum (II) Complexes Based on Tetradentate Pyridine-Containing Ligands for Phosphorescent Organic Light-Emitting Diodes | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2020.18774 | 6683-6687 | 11 | 20 | |
| 2018 | Jeong, S; Kim, C; Kim, SH; Kim, DY; Lee, SE; Kim, YK; Yoon, SS | Blue organic light-emitting diodes based on spiro[fluorene-indeno]pyridine derivatives | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 10.1080/15421406.2018.1452867 | 24-32 | 1 | 660 | |
| 2017 | Kim, DY; Kim, SH; Jeong, S; Lee, HW; Kim, YK; Yoon, SS | Blue Emitters Based on 2-Styryl-9H-fluorene Derivatives End-Capped with Diarylamine for Organic Light-Emitting Diodes | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2017.13391 | 3938-3942 | 6 | 17 | |
| 2016 | Kang, S; Lee, H; Kim, B; Park, Y; Park, J | Synthesis and Property of New Propeller Shaped Emitting Materials for Organic Light-Emitting Devices | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2016.11055 | 3102-3105 | 3 | 16 | |
| 2018 | Jeong, S; Kim, C; Lee, HW; Kim, YK; Yoon, SS | 6,11-Diphenyl-13H-Indeno[1,2-b]Anthracene Derivatives for Blue Fluorescent Organic Light Emitting Diodes | SCIENCE OF ADVANCED MATERIALS | 10.1166/sam.2018.3133 | 616-621 | 5 | 10 | |
| 2015 | Kang, S; Lee, H; Kim, B; Kang, H; Park, J | Synthesis and Property of New Blue Emitting Materials with Bulky Side Group | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 10.1080/15421406.2015.1076296 | 66-73 | 1 | 618 | |
| 2016 | Lee, J; Kim, B; Park, J | Excimer Formation Promoted by Steric Hindrance in Dual Core Chromophore for Organic Light-Emitting Diodes Emitters | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2016.12479 | 8854-8857 | 8 | 16 | |
| 2017 | Jeong, S; Kim, SH; Kim, DY; Kim, C; Lee, HW; Lee, SE; Kim, YK; Yoon, SS | Blue organic light-emitting diodes based on diphenylamino dibenzo[g,p] chrysene derivatives | THIN SOLID FILMS | 10.1016/j.tsf.2017.05.011 | 8月14日 | 636 | ||
| 2020 | Moon, J; Lee, J; Kim, KJ; Lee, H; Kim, YK; Yoon, SS | Blue Fluorescent Organic Light-Emitting Diodes Using 11,11-Dimethy1-3-(10-phenylanthracen-9-yl)-11H-Indeno[1,2-b]Quinoline Derivatives | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2020.17824 | 4652-4656 | 8 | 20 | |
| 2017 | Jung, H; Lee, H; Kang, S; Shin, DH; Kay, KY; Park, J | New anthracene derivatives containing coumarin moiety for organic light-emitting diodes | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 10.1080/15421406.2017.1355708 | 90-95 | 1 | 654 | |
| 2017 | Jung, H; Kang, S; Shin, D; Song, G; Kay, KY; Park, J | Synthesis and electroluminescent properties of new coumarin derivatives | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 10.1080/09273948.2017.1338882 | 48-54 | 1 | 651 | |
| 2017 | Jung, H; Shin, DH; Lee, H; Kim, T; Kay, KY; Park, J | New Bipolar Green Emitting Material Based on Amino Coumarin Derivative with High Efficiency for Organic Light Emitting Diodes | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 10.1166/jnn.2017.14120 | 5890-5892 | 8 | 17 |
OLEDに関する最新研究の総括（2-TNATAを中心に）
【概要】
本調査では、ホール輸送材料2-TNATAを含む有機EL（OLED）に関する23本の論文を対象に、材料設計、デバイス構造、発光特性に関する研究の動向を解析しました。発光層材料にはアントラセン【DOI: 10.1016/j.synthmet.2015.02.037】、スピロ【DOI: 10.1080/15421406.2018.1452867】、ベンゾキノリン誘導体【DOI: 10.1080/15421406.2019.1645470】などが多数用いられ、多層構造デバイス（ITO/2-TNATA/NPB/EML/Bphen/LiF/Al）【DOI: 10.1166/jnn.2015.11260】によって優れた電流注入・再結合効率が報告されました。発光波長はおおむね440～520 nmの範囲に分布し【DOI: 10.1080/09273948.2017.1338890】、白色から青色発光までを網羅。特に熱安定性・発光効率において著しい改善が認められ、光電子デバイスやディスプレイ応用における可能性が示唆されました。
【詳細解析】
1. 使用材料（発光体・輸送層）
23本の論文において、以下のような多様な発光材料・電子／ホール輸送材料が使用されました。
- アントラセン誘導体（blue emitter）：PL発光波長 443–520 nm、熱分解温度 400℃以上【DOI: 10.1016/j.synthmet.2015.02.037, 10.1080/09273948.2017.1338890】
- スピロ構造分子：剛直構造により分子間相互作用を抑制し、安定性を向上【DOI: 10.1080/15421406.2018.1452867】
- ベンゾ[q]キノリン誘導体：高い発光効率と電子注入性を両立【DOI: 10.1080/15421406.2019.1645470】
- Rubrene（黄ドーパント）やAlq₃, Bepp₂, TPBiなどのETLとして併用【DOI: 10.1155/2021/5529644】
- ADN, DSA-Phなど青色系ホスト／ドーパントとして多数登場【同上】
2. デバイス構造と作製手法
- 多くの研究でITO/2-TNATA/NPB/EML/TPBi(or Bphen)/LiF/Al構造が採用され、2-TNATAはホール注入／輸送層として定番化【DOI: 10.1166/jnn.2015.11260, 10.1080/09273948.2017.1338890】
- **熱蒸着法（真空蒸着）**による精密な多層膜の形成【DOI: 10.1016/j.dyepig.2016.08.010】
- SimOLEDなどの光学シミュレーションを活用してキャビティ構造最適化や発光効率の最大化【DOI: 10.1155/2021/5529644】
- 白色OLEDでは多重ドーピング構成やキャビティ共振制御によりCIE色度や輝度バランスを調整【同上】
3. 得られた性能・新規知見
- 発光波長：溶液状態で437–488 nm、固体薄膜状態で457–520 nm【DOI: 10.1166/jnn.2015.11260, 10.1080/09273948.2017.1338890】
- 外部量子効率（EQE）や発光輝度の向上が複数の研究で確認【DOI: 10.1080/15421406.2018.1452867, 10.1016/j.dyepig.2016.08.010】
- 熱安定性：T_d（熱分解温度）400–467°Cの範囲で良好な耐久性【DOI: 10.1166/jnn.2015.11260】
- 発光色：青〜緑〜白色まで広く制御可能、特にスピロ構造による青色安定発光が注目【DOI: 10.1080/15421406.2018.1452867】
- 白色OLEDでは色純度と電流効率の両立が課題であり、発光スペクトル制御に重点【DOI: 10.1155/2021/5529644】
Summary of Recent Research on OLEDs (Focusing on 2-TNATA)
【Overview (Approx. 400 Characters)】
This survey analyzes the trends in material design, device structure, and emission characteristics based on 23 research articles related to organic light-emitting diodes (OLEDs) incorporating the hole-transport material 2-TNATA. Emissive materials such as anthracene【DOI: 10.1016/j.synthmet.2015.02.037】, spiro-based compounds【DOI: 10.1080/15421406.2018.1452867】, and benzoquinoline derivatives【DOI: 10.1080/15421406.2019.1645470】were frequently used. Multi-layered structures such as ITO/2-TNATA/NPB/EML/Bphen/LiF/Al【DOI: 10.1166/jnn.2015.11260】enabled efficient carrier injection and recombination. Emission wavelengths mostly ranged from 440 to 520 nm【DOI: 10.1080/09273948.2017.1338890】, covering blue to white emission. Notably, significant improvements were reported in thermal stability and emission efficiency, suggesting strong potential for use in optoelectronic devices and display applications.
【Detailed Analysis】
1. Materials Used (Emissive and Transport Layers)
Across the 23 articles, a wide variety of emissive and charge transport materials were employed:
- Anthracene derivatives (blue emitters): PL emission at 443–520 nm, decomposition temperatures above 400°C【DOI: 10.1016/j.synthmet.2015.02.037, 10.1080/09273948.2017.1338890】
- Spiro-structured molecules: Rigid structures suppress intermolecular interactions and enhance stability【DOI: 10.1080/15421406.2018.1452867】
- Benzo[q]quinoline derivatives: Provide both high emission efficiency and excellent electron injection【DOI: 10.1080/15421406.2019.1645470】
- Rubrene (yellow dopant), Alq₃, Bepp₂, and TPBi were widely used as ETL materials【DOI: 10.1155/2021/5529644】
- ADN and DSA-Ph were common blue host/dopant components【same as above】
2. Device Structures and Fabrication Methods
- A typical multi-layer configuration was ITO/2-TNATA/NPB/EML/TPBi (or Bphen)/LiF/Al, where 2-TNATA was routinely used as a hole injection/transport layer【DOI: 10.1166/jnn.2015.11260, 10.1080/09273948.2017.1338890】
- Thermal vacuum deposition was predominantly employed for precise multilayer film fabrication【DOI: 10.1016/j.dyepig.2016.08.010】
- Optical simulations such as SimOLED were used to optimize cavity structures and enhance emission efficiency【DOI: 10.1155/2021/5529644】
- For white OLEDs, multi-doping and cavity resonance control were key to optimizing CIE coordinates and luminance balance【same as above】
3. Key Performance Metrics and Novel Findings
- Emission wavelengths: 437–488 nm in solution, 457–520 nm in solid film state【DOI: 10.1166/jnn.2015.11260, 10.1080/09273948.2017.1338890】
- EQE and luminance improvements were consistently reported【DOI: 10.1080/15421406.2018.1452867, 10.1016/j.dyepig.2016.08.010】
- Thermal stability: T_d ranged from 400°C to 467°C, indicating good durability【DOI: 10.1166/jnn.2015.11260】
- Color tuning: Emission colors from blue to green to white were effectively controlled; spiro-based compounds enabled stable blue emission【DOI: 10.1080/15421406.2018.1452867】
- In white OLEDs, balancing color purity and current efficiency remained a key challenge, highlighting the importance of spectral control【DOI: 10.1155/2021/5529644】
In summary, by linking each technical insight directly to supporting publications through DOI references, this summary improves academic traceability and reliability.
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