Kilwon Cho

Summary

Affiliation: Pohang University of Science and Technology
Country: Korea

Publications

  1. doi request reprint Positional effects of fluorination in conjugated side chains on photovoltaic properties of donor-acceptor copolymers
    Jisoo Shin
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Korea
    Chem Commun (Camb) . 2017
  2. doi request reprint Graphene growth under Knudsen molecular flow on a confined catalytic metal coil
    Hyojin Bong
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea
    Nanoscale 7:1314-24. 2015
  3. ncbi request reprint Controlled nanomorphology of PCDTBT-fullerene blends via polymer end-group functionalization for high efficiency organic solar cells
    Chiyeoung Shim
    School of Environmental Science and Engineering Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Korea
    Chem Commun (Camb) 48:7206-8. 2012
  4. doi request reprint Inverse transfer method using polymers with various functional groups for controllable graphene doping
    Seong Kyu Lee
    Department of Chemical Engineering and Department of Chemistry, Pohang University of Science and Technology POSTECH, Pohang, 790 784, Korea
    ACS Nano 8:7968-75. 2014
  5. doi request reprint Enhanced Organic Solar Cell Stability through the Effective Blocking of Oxygen Diffusion using a Self-Passivating Metal Electrode
    Hansol Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam ro, Nam Gu, Pohang, 790 784, Republic of Korea
    ChemSusChem 9:445-54. 2016
  6. doi request reprint Facet-Mediated Growth of High-Quality Monolayer Graphene on Arbitrarily Rough Copper Surfaces
    Hyo Chan Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, South Korea
    Adv Mater 28:2010-7. 2016
  7. doi request reprint Donor-acceptor alternating copolymer nanowires for highly efficient organic solar cells
    Jaewon Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Korea
    Adv Mater 26:6706-14. 2014
  8. doi request reprint Graphene: doping graphene with an atomically thin two dimensional molecular layer (adv. Mater. 48/2014)
    Haena Kim
    Department of Chemical Engineering, Polymer Research Institute, Pohang University of Science and Technology, Pohang, 790 784, Republic of Korea
    Adv Mater 26:8070. 2014
  9. doi request reprint Sheet Size-Induced Evaporation Behaviors of Inkjet-Printed Graphene Oxide for Printed Electronics
    Haena Kim
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Republic of Korea
    ACS Appl Mater Interfaces 8:3193-9. 2016
  10. doi request reprint Boosting Photon Harvesting in Organic Solar Cells with Highly Oriented Molecular Crystals via Graphene-Organic Heterointerface
    Sae Byeok Jo
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea
    ACS Nano 9:8206-19. 2015

Collaborators

  • Kwang S Kim
  • Hyun Ho Kim
  • Boseok Kang
  • Sae Byeok Jo
  • Haena Kim
  • Seong Kyu Lee
  • Jaewon Lee
  • Min Kim
  • Yoonyoung Chung
  • Hyojin Bong
  • Wi Hyoung Lee
  • Seung Goo Lee
  • Dong Hun Sin
  • Hyo Chan Lee
  • Heung Gyu Kim
  • Eunho Lee
  • Geun Yeol Bae
  • Jisoo Shin
  • Hyomin Ko
  • Hansol Lee
  • Joong Tark Han
  • Geon Woong Lee
  • Jeong In Jang
  • Jae Won Yang
  • Joo Hyun Kim
  • Geunsik Lee
  • Jaesung Park
  • Chiyeoung Shim
  • Hyeongjin Hwang
  • Sang Woo Pak
  • Ranbir Singh
  • Daegun Kim
  • Ran Kim
  • Seon Baek Lee
  • Yun Hi Kim
  • Soon Ki Kwon
  • Min Seok Yoo
  • Kyu Chan Song
  • Giwon Lee
  • Jung Ah Lim
  • Do Hwan Kim
  • Eunjoo Song
  • Sangryun Lee
  • Seongkyu Lee
  • Seong Won Kim
  • Seunghwa Ryu
  • Myungsun Sim
  • Tae Joo Shin
  • Jong Hwan Park
  • Joon Hak Oh
  • Hiroshi Jinnai
  • Sang Kyu Kwak
  • Moonjeong Jang
  • Dong Yun Lee
  • Yeong Don Park
  • Namwoo Park
  • Hyun Ho Choi
  • Junghwi Lee
  • Soojin Lim
  • Dong Seok Ham
  • Honggi Min
  • Unsuk Seo
  • Hwa Sung Lee
  • Byung Hee Hong
  • Yungi Kim
  • Soo Ghang Ihn
  • Young Jun Yu
  • Yeong Suk Choi
  • Philip Kim
  • Youngsoo Kim

Detail Information

Publications28

  1. doi request reprint Positional effects of fluorination in conjugated side chains on photovoltaic properties of donor-acceptor copolymers
    Jisoo Shin
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Korea
    Chem Commun (Camb) . 2017
    ..The fluorine in the ortho-position achieved a lower HOMO energy level than that in the meta-position, but reduced the chain rigidity...
  2. doi request reprint Graphene growth under Knudsen molecular flow on a confined catalytic metal coil
    Hyojin Bong
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea
    Nanoscale 7:1314-24. 2015
    ..We also show that the evolution of the catalytic Ni surface in a stacked system results in larger grains in the (111) plane, and consequently in reproducible, uniform, and high-quality multi-layered graphene. ..
  3. ncbi request reprint Controlled nanomorphology of PCDTBT-fullerene blends via polymer end-group functionalization for high efficiency organic solar cells
    Chiyeoung Shim
    School of Environmental Science and Engineering Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Korea
    Chem Commun (Camb) 48:7206-8. 2012
    ..The devices based on the end-fluorinated PCDTBT exhibit a remarkably enhanced efficiency as high as 6.0% without applying any post-treatments, additives or optical spacers...
  4. doi request reprint Inverse transfer method using polymers with various functional groups for controllable graphene doping
    Seong Kyu Lee
    Department of Chemical Engineering and Department of Chemistry, Pohang University of Science and Technology POSTECH, Pohang, 790 784, Korea
    ACS Nano 8:7968-75. 2014
    ..The versatility of polymer functional groups suggests that the method developed here will provide valuable routes to the development of applications of CVD-grown graphene in organic electronic devices. ..
  5. doi request reprint Enhanced Organic Solar Cell Stability through the Effective Blocking of Oxygen Diffusion using a Self-Passivating Metal Electrode
    Hansol Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam ro, Nam Gu, Pohang, 790 784, Republic of Korea
    ChemSusChem 9:445-54. 2016
    ....
  6. doi request reprint Facet-Mediated Growth of High-Quality Monolayer Graphene on Arbitrarily Rough Copper Surfaces
    Hyo Chan Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, South Korea
    Adv Mater 28:2010-7. 2016
    ..The electron mobility of synthesized graphene on the rough Cu surfaces is enhanced to 10 335 cm(2) V(-1) s(-1)...
  7. doi request reprint Donor-acceptor alternating copolymer nanowires for highly efficient organic solar cells
    Jaewon Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Korea
    Adv Mater 26:6706-14. 2014
    ..The resultant maximum power conversion efficiency is 8.2% in a conventional single-cell structure, revealing a 60% higher performance than in devices without nanowires. ..
  8. doi request reprint Graphene: doping graphene with an atomically thin two dimensional molecular layer (adv. Mater. 48/2014)
    Haena Kim
    Department of Chemical Engineering, Polymer Research Institute, Pohang University of Science and Technology, Pohang, 790 784, Republic of Korea
    Adv Mater 26:8070. 2014
    ..0.55 nm) and transparency (ca. 96.7 %) of the graphene, as well as its long-term conductivity in air. Owing to these excellent properties, GO-doped graphene is promising as electrode in optoelectronic devices. ..
  9. doi request reprint Sheet Size-Induced Evaporation Behaviors of Inkjet-Printed Graphene Oxide for Printed Electronics
    Haena Kim
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Republic of Korea
    ACS Appl Mater Interfaces 8:3193-9. 2016
    ..We believe that our new strategy to control the size of GO nanosheets and our findings about the colloidal and electrical properties of size-controlled GO nanosheets will be very effective to fabricate graphene based printed electronics...
  10. doi request reprint Boosting Photon Harvesting in Organic Solar Cells with Highly Oriented Molecular Crystals via Graphene-Organic Heterointerface
    Sae Byeok Jo
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea
    ACS Nano 9:8206-19. 2015
    ..The present findings indicate that controlling organic-graphene heterointerface could provide a design strategy of organic solar cell architecture for boosting photon harvesting. ..
  11. doi request reprint Decoupling Charge Transfer and Transport at Polymeric Hole Transport Layer in Perovskite Solar Cells
    Dong Hun Sin
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea
    ACS Appl Mater Interfaces 8:6546-53. 2016
    ....
  12. doi request reprint Single-gate bandgap opening of bilayer graphene by dual molecular doping
    Jaesung Park
    Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology, Pohang 790 784, Korea
    Adv Mater 24:407-11. 2012
    ..This unambiguously proves that it is possible to open a bandgap with two molecular dopants (F4-TCNQ and NH2 -functionalized self-assembled monolayers (SAMs)) even in a single-gate device structure. ..
  13. ncbi request reprint Graphene: Water-Free Transfer Method for CVD-Grown Graphene and Its Application to Flexible Air-Stable Graphene Transistors (Adv. Mater. 20/2014)
    Hyun Ho Kim
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Republic of Korea
    Adv Mater 26:3166. 2014
    ....
  14. doi request reprint Substrate-induced solvent intercalation for stable graphene doping
    Hyun Ho Kim
    Department of Chemical Engineering and Center for Superfunctional Materials, Pohang University of Science and Technology, Pohang 790 784, Korea
    ACS Nano 7:1155-62. 2013
    ....
  15. doi request reprint Organic solar cells based on three-dimensionally percolated polythiophene nanowires with enhanced charge transport
    Joo Hyun Kim
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea
    ACS Appl Mater Interfaces 6:5640-50. 2014
    ..42%, and the photocurrent did not decrease significantly up to a thickness of 600 nm, resulting in a PCE of 3.75%, 70% of the maximum PCE of 5.42%. ..
  16. pmc Ubiquitous Graphene Electronics on Scotch Tape
    Yoonyoung Chung
    Department of Electrical Engineering, Pohang University of Science and Technology, Pohang 37073, Korea
    Sci Rep 5:12575. 2015
    ..As-fabricated graphene transistors on Scotch tape exhibited high electron mobility of 1326 (±155) cm(2) V(-1) s(-1); the transistors still showed high mobility of 1254 (±478) cm(2) V(-1) s(-1) even after they were crumpled. ..
  17. doi request reprint Evaporation-induced self-alignment and transfer of semiconductor nanowires by wrinkled elastomeric templates
    Seung Goo Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Korea
    Adv Mater 25:2162-6. 2013
    ..The wrinkled templates, which have a surface topography that can be tuned via changes in the mechanical strain, are used as both a template to align the nanowires and as a stamp to transfer the aligned nanowires to target substrates...
  18. doi request reprint Doping graphene with an atomically thin two dimensional molecular layer
    Haena Kim
    Department of Chemical Engineering, Polymer Research Institute, Pohang University of Science and Technology, Pohang, 790 784, Republic of Korea
    Adv Mater 26:8141-6. 2014
    ..This method enables the strong, stable, large-scale, low-temperature, and controllable p-doping of graphene with preserved charge mobility, intrinsic roughness, and transmittance. ..
  19. doi request reprint Enhancing 2D growth of organic semiconductor thin films with macroporous structures via a small-molecule heterointerface
    Boseok Kang
    1 Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea 2
    Nat Commun 5:4752. 2014
    ..Our approach opens a new way for the fabrication of nanostructured semiconducting layers towards high-performance organic electronics. ..
  20. doi request reprint Work-function-tuned reduced graphene oxide via direct surface functionalization as source/drain electrodes in bottom-contact organic transistors
    Boseok Kang
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Korea
    Adv Mater 25:5856-62. 2013
    ....
  21. doi request reprint Naphthodithiophene-Based Conjugated Polymer with Linear, Planar Backbone Conformation and Strong Intermolecular Packing for Efficient Organic Solar Cells
    Jaewon Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Korea
    ACS Appl Mater Interfaces 7:21159-69. 2015
    ..92 mA cm(-2), and a fill factor of 63.5% with thermal annealing, which demonstrates that the NDT and DT2FBT moieties are a promising electron-donor/acceptor combination for high-performance photovoltaics. ..
  22. doi request reprint A Nonfullerene Small Molecule Acceptor with 3D Interlocking Geometry Enabling Efficient Organic Solar Cells
    Jaewon Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, South Korea
    Adv Mater 28:69-76. 2016
    ..By employing both a novel polymer donor and a nonfullerene small-molecule acceptor in the solution-processed organic solar cells, a high-power conversion efficiency of close to 6% is demonstrated. ..
  23. doi request reprint Linearly and Highly Pressure-Sensitive Electronic Skin Based on a Bioinspired Hierarchical Structural Array
    Geun Yeol Bae
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, South Korea
    Adv Mater 28:5300-6. 2016
    ..Especially, its high transparency enables an accurate placement of the device on the target position when it is used for health monitoring. ..
  24. doi request reprint Water-free transfer method for CVD-grown graphene and its application to flexible air-stable graphene transistors
    Hyun Ho Kim
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790 784, Republic of Korea
    Adv Mater 26:3213-7. 2014
    ..A polymeric bilayer (PMMA/PBU) is coated on graphene as a supporting layer for the water-free transfer process and as an excellent passivation layer that enhances device operation. ..
  25. doi request reprint Transparent superhydrophobic/translucent superamphiphobic coatings based on silica-fluoropolymer hybrid nanoparticles
    Seung Goo Lee
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea
    Langmuir 29:15051-7. 2013
    ....
  26. doi request reprint Side-Chain-Induced Rigid Backbone Organization of Polymer Semiconductors through Semifluoroalkyl Side Chains
    Boseok Kang
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea
    J Am Chem Soc 138:3679-86. 2016
    ..50 cm(2) V(-1) s(-1) and with a high on-off current ratio of 10(5). ..
  27. doi request reprint Directly drawn organic transistors by capillary pen: a new facile patterning method using capillary action for soluble organic materials
    Boseok Kang
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
    Adv Mater 25:4117-22. 2013
    ....
  28. doi request reprint Recent advances in organic transistor printing processes
    Boseok Kang
    Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790 784, Korea
    ACS Appl Mater Interfaces 5:2302-15. 2013
    ..Considerations for improving OFET device performance using printing processes are explored. Prior to OFET commercialization, the OFET printing techniques must satisfy several requirements, as discussed here...