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검색어 | Organic photovoltaic <strong>AND</strong> <strong>AND</strong>

연구자

1-9 out of 18 results

고서진 에너지공학과 2011 1, 4, 9, 8, 9, 3, 3, 3, 5, 7, 10, 6, 8, 7, 3, 1, 2026
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김동유 신소재공학과 1992 1, 1, 2, 2, 4, 9, 4, 1, 1, 13, 8, 5, 15, 15, 20, 22, 17, 14, 18, 14, 17, 22, 19, 15, 18, 12, 7, 8, 8, 6, 8, 7, 5, 3, 2026
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김범준 생명화학공학과 2005 3, 2, 11, 2, 8, 4, 13, 9, 17, 18, 21, 15, 20, 23, 21, 27, 33, 42, 34, 37, 20, 6, 2026
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김봉수 화학과 2002 1, 1, 1, 2, 1, 5, 1, 4, 1, 8, 15, 16, 16, 6, 6, 1, 9, 10, 5, 11, 12, 12, 10, 2025
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김진영 탄소중립대학원 2000 1, 1, 5, 4, 2, 8, 3, 6, 9, 1, 4, 14, 18, 16, 19, 31, 22, 18, 22, 16, 29, 18, 13, 19, 13, 19, 2, 2026
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김희주 화학과 2001 1, 1, 1, 1, 1, 2, 1, 1, 2, 3, 4, 1, 3, 4, 4, 2, 2, 2, 2, 4, 3, 5, 2, 2024
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양창덕 에너지화학공학과 1999 1, 2, 1, 3, 3, 3, 4, 7, 7, 14, 6, 9, 11, 14, 18, 23, 29, 37, 40, 31, 44, 28, 20, 6, 2026
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유승협 전기및전자공학부 1999 3, 1, 1, 3, 3, 4, 6, 7, 11, 18, 15, 11, 11, 14, 13, 15, 11, 10, 19, 15, 7, 13, 8, 13, 2, 2026
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이강택 화학과 2002 4, 1, 1, 2, 2, 1, 1, 1, 2, 1, 2, 3, 5, 1, 5, 2, 6, 3, 2, 1, 2, 2025
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연구실

1-7 out of 7 results

저널논문

1-3 out of 92 results

Eco-friendly non-volatile solid additives for high-efficiency sustainable organic photovoltaic cells JOURNAL OF MATERIALS CHEMISTRY A, 2025-07

Eco-friendly non-volatile solid additives for high-efficiency sustainable organic photovoltaic cells
Kim, Do Hui ; Lee, Heunjeong ; Lee, Dongchan ; Yeop, Jiwoo ; Kim, Jin Young ; Cho, Shinuk

초록	As organic photovoltaics (OPVs) have become increasingly commercially viable in recent years, with power conversion efficiency (PCE) exceeding 20%, the importance of environmental sustainability has also grown significantly. While most eco-friendly OPV developments have focused on replacing solvents in the photoactive layer with benign alternatives, reliance on harmful additives for morphology modulation remains a major obstacle to achieving fully sustainable OPVs. This study presents the first example of a fully eco-friendly OPV, achieved by incorporating novel, non-volatile, eco-friendly solid additives, specifically, 4,4 '-dihydroxybiphenyl (DBP), 4,4 '-dimethylbiphenyl (DMBP), and 2,2 '-dihydroxy-4-methoxybenzophenone (DM), in combination with the eco-friendly solvent o-xylene. Among them, DBP demonstrates the highest performance and long-term stability due to its superior miscibility and higher boiling point, achieving a PCE of 17.78%. Enhanced crystallinity and optimal phase separation morphology within the photoactive layer by DBP contribute to improvements in charge transfer, mobility, and device stability. This development marks a significant step toward the commercialization of sustainable OPVs, meeting the dual objectives of high efficiency and environmental compatibility.
서지사항	JOURNAL OF MATERIALS CHEMISTRY A, 2025-07
ISSN	2050-7488
주제분야	Chemistry Energy & Fuels Materials Science
저자 키워드
DOI	10.1039/d5ta03943f
자료유형	Article; Early Access
기관	UNIST

Cross-Linking-Integrated Sequential Deposition: A Method for Efficient and Reproducible Bulk Heterojunctions in Organic Solar Cells ACS APPLIED MATERIALS & INTERFACES, v.16, no.41, pp.55873 - 55880, 2024-10
SCOPUS 4

Keywords film uniformity sequential deposition reproducibility organic photovoltaic cross-linked-polymer

Cross-Linking-Integrated Sequential Deposition: A Method for Efficient and Reproducible Bulk Heterojunctions in Organic Solar Cells
Kim, Hyunkyoung ; Heo, Yuchan ; Na, Yeji ; Shafian, Shafidah ; Kim, BongSoo ; Kim, Kyungkon

초록	The formation of bulk heterojunctions (BHJs) through sequential deposition (SqD) of polymer donor and nonfullerene acceptor (NFA) solutions offers advantages over the widely used single-step deposition of polymer:NFA blend solutions (BSD). To enhance the application of SqD in organic solar cell production, it is crucial to improve reproducibility and stability while maintaining a high efficiency. This study introduces a novel method termed cross-linking-integrated sequential deposition (XSqD) for fabricating efficient and reproducible BHJs. In this method, polymers are cross-linked using efficient 2Bx-4EO or 2Bx-8EO cross-linkers, which enhance the solvent resistance of the polymer donor layer against the solvents used for NFAs. This approach addresses the challenge of selecting a suitable solvent for NFAs, a major obstacle in SqD-processed OSCs. The utilization of 2Bx-4EO in XSqD leads to a significant increase in reproducibility compared to that of conventional SqD, coupled with a high-power conversion efficiency (PCE) of 14.1%. Furthermore, XSqD devices exhibit superior stability, showing only 1% and 6% reductions in their initial PCE after thermal stress at 80 and 120 degrees C for 50 h, respectively.
서지사항	ACS APPLIED MATERIALS & INTERFACES, v.16, no.41, pp.55873 - 55880, 2024-10
ISSN	1944-8244
주제분야	Science & Technology - Other Topics Materials Science
저자 키워드	film uniformity sequential deposition reproducibility organic photovoltaic cross-linked-polymer
DOI	10.1021/acsami.4c13237
자료유형	Article
기관	UNIST

Low-Temperature Processed Efficient and Reproducible Blade-Coating Organic Photovoltaic Devices with γ-Position Branched Inner Side Chains-Containing Nonfullerene Acceptor SMALL SCIENCE, v.4, no.7, pp.1 - 10, 2024-04
SCOPUS 10

Keywords low-temperature processing reproducibility solubility blade coating film uniformity

Low-Temperature Processed Efficient and Reproducible Blade-Coating Organic Photovoltaic Devices with γ-Position Branched Inner Side Chains-Containing Nonfullerene Acceptor
Won, D ; Kang, S ; Park, J ; Park, J ; Kim, W ; Mai, TLH ; Lee, S ; Yang, Changduk

초록	Recent advancements in blade-coating organic photovoltaic (OPV) devices utilizing eco-friendly nonhalogenated solvents have demonstrated high power conversion efficiencies (PCEs) when processed at high substrate temperatures. However, this method poses challenges in device reproducibility and stability. Herein, a BTP-eC9-γ nonfullerene acceptor (analogous to BTP-eC9) with γ-position-branched inner side chains within the BTP-eC9-based structural motif is developed. This pin-sized extension in the branching position enhances the solubility of BTP-eC9-γ in nonhalogenated toluene solvent. This improvement not only mitigates excessive aggregation in the film state but also facilitates device fabrication at lower substrate temperatures. Optimized at a substrate temperature of 40 °C, the BTP-eC9-γ-based blade-coating devices with toluene achieve remarkable PCEs of 16.43% (0.04 cm2) and 14.95% (1.0 cm2). Furthermore, these devices retain their high film uniformity at 40 °C, which contributes to superior device reproducibility. This is attributed to the minimized alteration in the evolution kinetics of fluid flow. These findings signify a promising direction for the industrial production of blade-coating OPV devices.
서지사항	SMALL SCIENCE, v.4, no.7, pp.1 - 10, 2024-04
ISSN	2688-4046
주제분야
저자 키워드	low-temperature processing reproducibility solubility blade coating film uniformity
DOI	10.1002/smsc.202400034
자료유형	Article
기관	UNIST

연구과제

1-2 out of 2 results

태양광을 이용한 자가발전형 능동 유연 RFID (5차년도) 교육부, 이공분야기초연구사업, 양민양, 2014-09 ~ 2015-08
Keywords Active-type RFID Organic photovoltaic Thin film Self-generating Printing technology

태양광을 이용한 자가발전형 능동 유연 RFID(4차년도) 교육부, 이공분야기초연구사업, 양민양, 2013-09 ~ 2014-08
Keywords Active-type RFID Organic photovoltaic Thin film Self-generating Printing technology

특허

1-3 out of 7 results

전도성 고분자 화합물, 이를 포함하는 유기태양전지 및 이의 제조방법 Conductive polymers, the organic photovoltaic cell comprising the same, and the synthesis thereof, Registration Number: 10-1997972, Registration Date: 2019-07-02, 대한민국

전도성 고분자 화합물, 이를 포함하는 유기태양전지 및 이의 제조방법

요약정보	본 발명은 전도성 고분자 화합물, 이를 포함하는 유기태양전지 및 이의 제조방법에 관한 것이다. 본 발명에 따른 신규한 고분자 화합물은 종래의 유기태양전지에 사용된 고분자 화합물 대비 우수한 광학적 특징과 더불어 높은 광전변환효율을 가지며, 할로겐화 용매 및 비할로겐화 용매에 우수한 용해도를 갖는다.	크게보기
타언어명	Conductive polymers, the organic photovoltaic cell comprising the same, and the synthesis thereof
출원번호	10-2017-0103776
출원일자	2017-08-16
등록번호	10-1997972
등록일자	2019-07-02
발명자	이윤구, 장소영
출원/등록국가	대한민국
기관	DGIST

전도성 고분자 화합물, 이를 포함하는 유기태양전지 및 이의 제조방법 CONDUCTIVE POLYMERS, THE ORGANIC PHOTOVOLTAIC CELL COMPRISING THE SAME, AND THE SYNTHESIS THEREOF, Registration Number: 10-312-446, Registration Date: 2019-06-04, 미국

전도성 고분자 화합물, 이를 포함하는 유기태양전지 및 이의 제조방법 Conductive polymers, the organic photovoltaic cell comprising the same, and the synthesis thereof, Registration Number: 10-1810900, Registration Date: 2017-12-14, 대한민국

전도성 고분자 화합물, 이를 포함하는 유기태양전지 및 이의 제조방법

요약정보	본 발명은 전도성 고분자 화합물, 이를 포함하는 유기태양전지 및 이의 제조방법에 관한 것으로, 더욱 자세하게는 배향성 조절을 통해 대칭적인 구조를 형성함으로써 우수한 광학적 특징과 더불어 높은 광전변환효율을 갖는 고분자 화합물 및 이를 포함하는 유기태양전지에 관한 것이며, 이와 더불어 상기 고분자 화합물의 제조방법에 관한 것이다. 본 발명에 따른 신규한 고분자 화합물은 쿼터티오펜(quaterthiophene) 및 플루오르로 치환된 벤조티아디아졸(benzothiadiazole)을 대칭적 구조로 형성되어 있어, 기존의 RRa(regiorandom)구조의 고분자 화합물 대비 우수한 광학적 특징과 더불어 높은 광전변환효율을 갖는다. 따라서 본 발명의 고분자 화합물은 유기태양전지 소자의 광활성층의 전자공여체 소재로서 유용하게 사용될 수 있으며, 이와 더불어 유기 광센서(OPD), 유기박막트랜지스터(OTFT), 유기발광다이오드(OLED) 등의 분야에 적용할 수 있는 유기 광전자소자의 재료로 유용하게 사용될 수 있다.	크게보기
타언어명	Conductive polymers, the organic photovoltaic cell comprising the same, and the synthesis thereof
출원번호	10-2016-0082421
출원일자	2016-06-30
등록번호	10-1810900
등록일자	2017-12-14
발명자	김홍기, 이윤구
출원/등록국가	대한민국
기관	DGIST

학술활동

1-3 out of 22 results

Unusual additive on improving the performance and stability in slot-die coated organic photovoltaic cells PVSEC-30, 대한민국, 2020-11-08 ~ 2020-11-13

Small Molecule Organic Photovoltaic Modules Fabricated via Halogen-Free System with Roll-to-Roll Compatible Scalable Printing Method 2018 MRS SPRING MEETING, 미국, 2018-04-02 ~ 2018-04-06

Small Molecule Organic Photovoltaic Modules Fabricated via Halogen-Free System with Roll-to-Roll Compatible Scalable Printing Method
Youn-Jung Heo ; Yen-Sook Jung ; Kyeongil Hwang ; Jueng-Eun Kim ; DaeHee Lim ; Yunseul Kim ; Kim, Dong-Yu

초록	Organic conjugated molecules have a great potential for cost-competitive, large-area and high throughput mass production on mechanically flexible substrate. In particular, small molecule, which is one of the organic conjugated molecules, have several distinct advantages such as well-defined molecular structure, high purity, and less batch-to-batch variation. During recent years, organic solar cells based on the small molecules have accomplished considerable progress, reaching the PCEs over 10%. Now, for further advances in this field, printed or halogen free fabricated small molecule solar cells should be also demonstrated. In this study, blend films of small molecules, benzodithiophene terthiophene rhodanine (BTR) and PC71BM were slot-die coated using a halogen-free solvent system. Moreover, for up-scaling production, we fabricated small molecule solar cells with not only time-consuming solvent vapor annealing (SVA) treatment but also more roll-to-roll compatible solvent additive approaches. The suitability of halogen-free additive method for up-scaling production was analyzed by using UV-vis absorption, EQE, AFM, TEM, SCLC, Light intensity and 2D-GIWAXS measurements. As a result, high efficiencies of 7.46% and 6.56% were achieved from time-consuming solvent vapor annealing (SVA) treatment and roll-to-roll compatible solvent additive approaches, respectively. After successful verification of our roll-to-roll compatible additive method on small-area devices, we finally demonstrated large-area photovoltaic modules composed of 4 stripes with a total active area of 10 cm2, achieving a power conversion efficiency (PCE) of 4.8%.
학술대회명	2018 MRS SPRING MEETING
개최국	미국
개최장소
개최일	2018-04-04
저자 키워드
DOI
기관	GIST

Vacuum Process Based Dry Transfer of Active Layer for PTB7:PC71BM Organic Photovoltaic Devices 118회 추계 총회 및 학술발표회, 대한민국, 2016-10-12 ~ 2016-10-14

Vacuum Process Based Dry Transfer of Active Layer for PTB7:PC71BM Organic Photovoltaic Devices
Lee, Jong Hwa ; Kim, Kang Min ; Kim, Young Yun ; Jang, Woongsik ; Ahn, Sunyong ; Wang, Dong Whan ; Park, O. Ok

초록
학술대회명	118회 추계 총회 및 학술발표회
개최국	대한민국
개최장소	BEXCO, 부산
개최일	2016-10-13
저자 키워드
DOI
기관	KAIST

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