초록 ▼

1) 낮은 밴드갭을 갖는 새로운 구조의 광활성층 고분자 및 저분자물질을 합성하고, 이를 이용하여 넓은 영역의 태양에너지를 전기에너지로 변환하는 고효율 유기태양전지 개발
2) Acceptor-donor 형태의 새로운 블록공중합체 또는 C60-end capped P3HT를 합성하고, 이를 이용하여 P3HT/PCBM bulk heterojunction의 나노 morphology 조절 및 유기태양전지 효율의 장기 안정성 향상
3) 광학모델과 2D drift-diffusion equation을 연결하여 domain size와 두께

1) 낮은 밴드갭을 갖는 새로운 구조의 광활성층 고분자 및 저분자물질을 합성하고, 이를 이용하여 넓은 영역의 태양에너지를 전기에너지로 변환하는 고효율 유기태양전지 개발
2) Acceptor-donor 형태의 새로운 블록공중합체 또는 C60-end capped P3HT를 합성하고, 이를 이용하여 P3HT/PCBM bulk heterojunction의 나노 morphology 조절 및 유기태양전지 효율의 장기 안정성 향상
3) 광학모델과 2D drift-diffusion equation을 연결하여 domain size와 두께에 따른 태양전지 소자의 효율을 계산하는 새로운 모델 개발
4) Roller painting 공법을 이용하여 대면적 태양전지 소자를 제작하여, 기존의 spin coating 대비 20% 이상의 높은 효율을 갖는 유기태양전지 개발
5) 기존의 PEDOT:PSS보다 높은 전기전도도 및 낮은 산성도를 갖는 신규 정공 수송층 물질을 합성하고, 이를 이용하여 기존 보다 20% 이상 향상된 고효율 유기태양전지 제작
6) 비극성 분산제를 이용하여 탄소나노튜브를 분산시키고, spin coating 법으로 ITO 전극을 대체할 만큼 높은 전기전도도와 투과도를 가지는 유연한 투명전극 개발
7) 다양한 블록길이를 갖는 aromatic-aliphatic 블록공중합체를 합성하고, 이를 이용하여 우수한 열적·화학적·치수안정성을 가지며 잘 정렬된 수소 이온 채널의 발현으로 고온에서도 우수한 수소 이온 전도도들 가지는 연료전지용 전해질 막의 제조

Abstract ▼

Ⅱ. Research Goal
The primary objectives of this project is to fabricate the high performance organic photovoltaics and fuel cell membrane by developing nanomaterials (molecular design/synthesis/analysis) for high efficient energy conversion.
Ⅲ. Research Contents and Scope
1. Molecular desig

Ⅱ. Research Goal
The primary objectives of this project is to fabricate the high performance organic photovoltaics and fuel cell membrane by developing nanomaterials (molecular design/synthesis/analysis) for high efficient energy conversion.
Ⅲ. Research Contents and Scope
1. Molecular design and synthesis of low band gap polymers for high efficiency polymer solar cells.
2. Molecular design and synthesis of small organic molecules with good solubility for solution process.
3. Development of new transparent anode material for substitution of ITO glass.
4. Device optimization of organic solar cells by computer simulation.
5. Development of new process for manufacturing large area organic solar cell.
6. Modification of interface between active layer and electrode for device optimization
7. Molecular design and synthesis of new compatibilizers (acceptor-donor type block copolymer, C60-end capped P3HT, P3HT-ZnPc-C60) for active layer (donor/acceptor blend) in organic photovoltaics for enhancement of long term stability .
8. Molecular design and synthesis of aromatic-aliphatic block copolymer for high efficient fuel cell membrane and its structure optimization.
Ⅳ. Research Output
1. Designed and synthesized new alternating copolymers with low bandgap, high hole mobility and suitable electronic energy levels, and prepared high efficiency solar cells from them.
▶ Org. Electron. 2010, 11, 846. [IF=3.676]
▶ J. Mater. Chem. 2011, 21, 8583. [IF=6.626]
▶ Energy Environ. Sci. 2012, 5, 6857. [IF=15.490]
▶ Nature Commun. 2012, 3:795. [IF=10.742]
▶ J. Phys. Chem. C 2012, 116, 8379. [IF=5.241]
▶ Org. Electron. 2012, 13, 1322. [IF=3.676]
▶ Chem. Commun. 2012, 48, 6933. [IF=6.718]
▶ Polym. Chem. 2012, 3, 2928. [IF=5.368]
▶ J. Appl. Phys. 2012, 111, 043710. [IF=2.185]
▶ Adv. Mater. 2013, 25, 2583. [IF=15.409]
▶ Energy Environ. Sci. 2013, 6, 3301. [IF=15.490]
▶ Chem. Commun. 2013, 49, 8495. [IF=6.718]
▶ Energy Environ. Sci. 2014, 7, 650. [IF=15.490]
▶ J. Mater. Chem. A 2014, 2, 14146. [IF=6.626]
▶ Chem. Mater. 2014, 26, 4214. [IF=8.535]
▶ Polym. Chem. 2014, DOI: 10.1039/C4PY00791C. [IF=5.368]
▶ ACS Appl. Mater. & Interfaces 2014, under revision. [IF=5.900]
2. Synthesized push-pull type small molecules and fabricated high performance solar cells by solution process.
▶ Org. Electron. 2012, 13, 3060. [IF=3.676]
▶ Org. Electron. 2013, 14, 1621. [IF=3.676]
3. Fabricated flexible transparent anode materials as a substitute of ITO by spin coating of single-walled carbon natotubes (CNTs) or graphenes dispersed in aqueous media in the presence of 5TN-PEG as a dispersing agent, and achieved high conductivity with high transparency.
▶ ACS Nano 2010, 4, 5382. [IF=12.033]
▶ J. Mater. Chem. C 2013, 1, 1870. [IF=6.626]
4. Developed new theoretical models for device optimization of single and tandem cells by combining the optical model and the 2-D drift-diffusion equation.
▶ Sol. Energy Mater. Sol. Cells 2010, 94, 1118. [IF=5.030]
▶ Sol. Energy Mater. Sol. Cells 2011, 95, 1095. [IF=5.030]
▶ J. Appl. Phys. 2011, 110, 114521. [IF=2.185]
5. Fabricated polymer solar cell devices with large area (10 cm2) by using the roller painting method and achieved 20% higher PCEs than the spin coating method.
▶ Adv. Funct. Mater. 2010, 20, 2355. [IF=10.439]
6. Synthesized new interlayer materials (hole transport layer material and electron transport layer material) and achieved 20% higher PCEs than commonly-used interlayer materials.
▶ J. Phys. Chem. C 2010, 114, 633. [IF=4.835]
▶ Adv. Mater. 2011, 23, 1782. [IF=15.409]
▶ Sol. Energy mater. Sol. Cell. 2014, 130, 599. [IF=5.030]
7. Synthesized new compatibilizers for control of nano-morphology of active layers in polymer based solar cells, and achieved excellent long-term stability.
▶ J. Mater. Chem. 2009, 19, 1483. [IF=6.626]
▶ Nanotechnology 2010, 21, 105201. [IF=3.672]
▶ J. Mater. Chem. 2010, 20, 3287. [IF=6.626]
▶ J. Mater. Chem. 2011, 21, 14209. [IF=6.626]
▶ J. Mater. Chem. 2012, 22, 24265. [IF=6.626]
▶ J. Polym. Sci., Part B: Polym. Phys. 2012, 50, 1018 [IF=2.548]
8. Synthesized non-fluorinated aromatic-aliphatic block copolymers with A-B or A-B-A type and used as fuel cell membrane which afford high proton conductivity at high temperature (100 oC) as well as high dimensional and thermal stability.
▶ Chem. Mater. 2010, 22, 3646. [IF=8.535]
▶ J. Mater. Chem. 2012, 22, 7187. [IF=6.626]
Ⅴ. Plans
1. New conjugated copolymers synthesized in our laboratory provide the guideline for synthesis of the copolymers achieving high performance polymer solar cells, and thus expected to contribute development of new materials for achieving high efficiency.
2. The solution processible small molecules can be applied to low-cost and large area solar cells.
3. The roller painting method provides the possibility of roll-to-roll processing for fabrication of polymer solar cells with high efficient PCE.
4. The development cost for device optimization of polymer solar cells can be reduced by the computer simulation method which has been developed in our laboratory.
5. The flexible and transparent anode material based on single-walled carbon nanotubes, graphene can be used as an anode for fabrication of flexible and wearable solar cells.
6. The new hole transport layer material and new buffer layer material can be used for cost-effective, highly-efficient and stable organic solar cell devices.
7. The compatibilizers synthesized in our laboratory can control effectively the morphology of bulk heterojunction structure in solar cells and thus enhance the long-term stability of polymer solar cells, which is critical issue for industralization.
8. New rod-coil block copolymers based on non-fluorinated monomers can be used as high temperature PEMFC membranes with high proton conductivity.