Horng-Long Cheng

Professor

  • 1189 Citations
  • 17 h-Index
19972019
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Research Output 1997 2019

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25 Citations (Scopus)

Alignment of poly(3,4-ethylenedioxythiophene) polymer chains in photovoltaic cells by ultraviolet irradiation

Tang, F-C., Chang, J., Wu, F. C., Cheng, H. L., Hsu, S. L. C., Chen, J. S. & Chou, W. Y., 2012 Nov 14, In : Journal of Materials Chemistry. 22, 42, p. 22409-22417 9 p.

Research output: Contribution to journalArticle

Photovoltaic cells
Polymers
Irradiation
Carrier transport
Electronic properties
1 Citation (Scopus)

Analyses of electrical properties and stability of organic complementary transistors

Chou, W. Y., Yeh, B. L., Cheng, H. L., Liu, S. J., Sun, B. Y., Chou, T. H. & Chen, Y. H., 2010 Sep 7, In : Journal of the Electrochemical Society. 157, 10, p. H959-H963

Research output: Contribution to journalArticle

Thin film transistors
inverters
Transistors
Electric properties
transistors
10 Citations (Scopus)

A nanoscale study of charge extraction in organic solar cells: The impact of interfacial molecular configurations

Tang, F. C., Wu, F. C., Yen, C. T., Chang, J., Chou, W. Y., Gilbert Chang, S. H. & Cheng, H. L., 2015 Jan 7, In : Nanoscale. 7, 1, p. 104-112 9 p.

Research output: Contribution to journalArticle

Heterojunctions
Polymers
Perylene
Molecules
Organic polymers
115 Citations (Scopus)
Thin film transistors
polyimides
Polyimides
transistors
thin films
9 Citations (Scopus)

Application of nanoimprinting technology to organic field-effect transistors

Chou, W. Y., Chang, M. H., Cheng, H. L., Yu, S. P., Lee, Y. C., Chiu, C. Y., Lee, C. Y. & Shu, D. Y., 2010 Mar 12, In : Applied Physics Letters. 96, 8, 083305.

Research output: Contribution to journalArticle

organic semiconductors
field effect transistors
charge carriers
microelectronics
integrated circuits
17 Citations (Scopus)

A simple method to estimate chain conformations of polyelectrolytes in the semidilute regime

Lin, K. F. & Cheng, H. L., 2000 Jun 27, In : Macromolecules. 33, 13, p. 4961-4965 5 p.

Research output: Contribution to journalArticle

Polyelectrolytes
Conformations
Salts
Methanol
Chlorides
3 Citations (Scopus)

Boron induced recrystallization of amorphous silicon film by a rapid thermal process

Chao, C. H., Weng, K. W., Cheng, H-L., Chan, C. H. & Lien, S. Y., 2010 Oct 1, In : Thin Solid Films. 518, 24, p. 7480-7482 3 p.

Research output: Contribution to journalArticle

Boron
Crystallization
silicon films
Amorphous silicon
Polysilicon
8 Citations (Scopus)

Charge selectivity in polymer:Fullerene-based organic solar cells with a chemically linked polyethylenimine interlayer

Wu, F. C., Tung, K. C., Chou, W. Y., Tang, F-C. & Cheng, H. L., 2016 Feb 1, In : Organic Electronics. 29, p. 120-126 7 p.

Research output: Contribution to journalArticle

Fullerenes
Polyethyleneimine
Butyric acid
fullerenes
interlayers
3 Citations (Scopus)

Charge transfer highways in polymer solar cells embedded with imprinted PEDOT:PSS gratings

Yen, C. T., Wu, F. C., Cheng, H. L., Sheu, H. S., Tang, F. C. & Chou, W. Y., 2014, In : RSC Advances. 4, 102, p. 58342-58348 7 p.

Research output: Contribution to journalArticle

Charge transfer
Atomic force microscopy
Organic field effect transistors
Phase separation
Short circuit currents
3 Citations (Scopus)

Controlling carrier trapping and relaxation with a dipole field in an organic field-effect device

Wang, Y. F., Tsai, M. R., Wang, P. Y., Lin, C. Y., Cheng, H. L., Tang, F. C., Lien-Chung Hsu, S., Hsu, C. C. & Chou, W. Y., 2016 Jan 1, In : RSC Advances. 6, 81, p. 77735-77744 10 p.

Research output: Contribution to journalArticle

Polyimides
Organic field effect transistors
Electrets
Data storage equipment
Gate dielectrics
29 Citations (Scopus)

Controlling polymorphic transformations of pentacene crystal through solvent treatments: An experimental and theoretical study

Cheng, H. L. & Lin, J. W., 2010 Oct 6, In : Crystal Growth and Design. 10, 10, p. 4501-4508 8 p.

Research output: Contribution to journalArticle

Polymorphism
Crystals
Organic solvents
crystals
Tile
25 Citations (Scopus)

Correlation of growth of pentacene films at various gas ambience conditions to organic field-effect transistor characteristics

Chou, W-Y., Mai, Y. S., Cheng, H-L., Yeh, C. Y., Kuo, C. W., Tang, F-C., Shu, D. Y., Yew, T. R. & Wen, T-C., 2006 Jan 1, In : Organic Electronics. 7, 6, p. 445-451 7 p.

Research output: Contribution to journalArticle

ambience
Organic field effect transistors
Thin film transistors
field effect transistors
Gases
7 Citations (Scopus)

Counterion dissociation dependence of chain conformation for poly(xylylene tetrahydrothiophenium chloride) in semidilute aqueous solution

Cheng, H-L. & Lin, K. F., 2003 Sep 9, In : Macromolecules. 36, 18, p. 6949-6951 3 p.

Research output: Contribution to journalArticle

Conformations
Chlorides
Salts
Sodium chloride
Sodium Chloride
15 Citations (Scopus)

Dependence of chain conformation on degree of sulfonation and counterion dissociation of sodium poly(styrene sulfonate) in semidilute aqueous solution

Lin, K. F., Cheng, H. L. & Cheng, Y. H., 2004 Mar, In : polymer. 45, 7, p. 2387-2392 6 p.

Research output: Contribution to journalArticle

Sulfonation
Styrene
Conformations
Sodium
Sodium chloride
10 Citations (Scopus)

Effective oxygen plasma treatment on indium tin oxide electrode to improve organic solar cell efficiency

Tang, F-C., Chang, J., Chou, W-Y., Cheng, H-L., Hsu, L-C., Chen, J-S. & Sheu, H. S., 2012 Feb 1, In : Physica Status Solidi (A) Applications and Materials Science. 209, 2, p. 369-372 4 p.

Research output: Contribution to journalArticle

oxygen plasma
Tin oxides
indium oxides
Indium
tin oxides
96 Citations (Scopus)

Effect of surface free energy in gate dielectric in pentacene thin-film transistors

Chou, W. Y., Kuo, C. W., Cheng, H. L., Chen, Y. R., Tang, F. C., Yang, F. Y., Shu, D. Y. & Liao, C. C., 2006 Sep 21, In : Applied Physics Letters. 89, 11, 112126.

Research output: Contribution to journalArticle

transistors
free energy
thin films
disorders
Dipole moment
Buffer layers
low voltage
Surface tension
interfacial tension
21 Citations (Scopus)

Effects of soft insulating polymer doping on the photovoltaic properties of polymer-fullerene blend solar cells

Wu, F. C., Hsu, S. W., Cheng, H. L., Chou, W. Y. & Tang, F-C., 2013 May 2, In : Journal of Physical Chemistry C. 117, 17, p. 8691-8696 6 p.

Research output: Contribution to journalArticle

Textile blends
Fullerenes
Polymethyl Methacrylate
Polymethyl methacrylates
polymethyl methacrylate
34 Citations (Scopus)
transistors
hysteresis
thin films
boiling
solidification
15 Citations (Scopus)

Efficient hybrid organic/inorganic photovoltaic cells utilizing n-type pentacene and intrinsic/p-type hydrogenated amorphous silicon

Chao, C. H., Chan, C. H., Wu, F. C., Huang, J. J., Yang Lien, S., Weng, K. W. & Cheng, H. L., 2011 Aug 1, In : Solar Energy Materials and Solar Cells. 95, 8, p. 2407-2411 5 p.

Research output: Contribution to journalArticle

Photovoltaic cells
Amorphous silicon
Semiconducting organic compounds
Absorption spectroscopy
Excitons
40 Citations (Scopus)

Electric field-induced structural changes in pentacene-based organic thin-film transistors studied by in situ micro-Raman spectroscopy

Cheng, H. L., Chou, W. Y., Kuo, C. W., Tang, F. C. & Wang, Y. W., 2006 Apr 17, In : Applied Physics Letters. 88, 16, 161918.

Research output: Contribution to journalArticle

transistors
Raman spectroscopy
electric fields
thin films
molecules
19 Citations (Scopus)

Electron transport properties in fluorinated copper-phthalocyanine films: Importance of vibrational reorganization energy and molecular microstructure

Wu, F. C., Cheng, H. L., Yen, C. H., Lin, J. W., Liu, S. J., Chou, W. Y. & Tang, F. C., 2010 Feb 26, In : Physical Chemistry Chemical Physics. 12, 9, p. 2098-2106 9 p.

Research output: Contribution to journalArticle

Electron transport properties
transport properties
Thin films
copper
microstructure
9 Citations (Scopus)
Energy transfer
energy transfer
Photoluminescence
photoluminescence
Glass
5 Citations (Scopus)

Enhanced & anisotropic charge transport in polymer-based thin-film transistors by guiding polymer growth

Wu, F. C., Lu, C. C., Ruan, J., Tang, F. C., Cheng, H. L. & Chou, W. Y., 2017 Feb 1, In : Crystal Growth and Design. 17, 2, p. 629-636 8 p.

Research output: Contribution to journalArticle

Thin film transistors
Charge transfer
Polymers
transistors
polymers
6 Citations (Scopus)

Enhancing emission of poly(p-phenylenevinylene) by sandwiching an energy transferable layer

Cheng, H. L. & Lin, K. F., 2002 Aug 1, In : Journal of Materials Chemistry. 12, 8, p. 2270-2274 5 p.

Research output: Contribution to journalArticle

Energy transfer
Electrons
Quantum efficiency
Excitons
Photoluminescence
7 Citations (Scopus)

Epitaxial pentacene films grown on the surface of ion-beam-processed gate dielectric layer

Chou, W-Y., Kuo, C. W., Cheng, H-L., Mai, Y. S., Tang, F-C., Lin, S. T., Yeh, C. Y., Horng, J. B., Chia, C. T., Liao, C. C. & Shu, D. Y., 2006 Jun 1, In : Journal of Applied Physics. 99, 11, 114511.

Research output: Contribution to journalArticle

ion beams
transistors
thin films
Raman spectroscopy
argon
8 Citations (Scopus)

Excimer laser irradiation induced suppression of off-state leakage current in organic transistors

Chou, W. Y., Lin, S. T., Cheng, H. L., Tang, F. C., Lin, Y. J., You, C. F. & Wang, Y. W., 2007 Jun 11, In : Applied Physics Letters. 90, 22, 222103.

Research output: Contribution to journalArticle

excimer lasers
leakage
transistors
retarding
irradiation
1 Citation (Scopus)

Flexible liquid crystal display film by plasma alignment method

Liu, K. H., Liao, C. C., Chou, W-Y., Cheng, H-L., Ho, C. T., Lin, S. T., Lee, C. Y. & Tang, H. C., 2007, In : Digest of Technical Papers - SID International Symposium. 38, 2, p. 1518-1521 4 p.

Research output: Contribution to journalArticle

Flexible displays
Liquid crystal displays
Plasmas
Zinc oxide
Indium
6 Citations (Scopus)

Gate field induced ordered electric dipoles in a polymer dielectric for low-voltage operating organic thin-film transistors

Chou, W-Y., Ho, T. Y., Cheng, H-L., Tang, F-C., Chen, J. H. & Wang, Y. W., 2013 Nov 21, In : RSC Advances. 3, 43, p. 20267-20272 6 p.

Research output: Contribution to journalArticle

Thin film transistors
Polyimides
Polymers
Semiconducting organic compounds
Electric potential
6 Citations (Scopus)

Highly energy-efficient and air-stable organic transistors by an ultrathin hybrid dielectric with large internal voltage generation

Wang, Y. W., Tseng, G. Y., Chiu, L. Y., Lin, B. R., Lin, Y. Y., Haung, T. W., Chou, W. Y., Horng, L. & Cheng, H. L., 2014 Oct 7, In : Journal of Materials Chemistry C. 2, 37, p. 7752-7760 9 p.

Research output: Contribution to journalArticle

Transistors
Electric potential
Air
Organic field effect transistors
Field effect transistors
16 Citations (Scopus)

High mobility pentacene thin-film transistors on photopolymer modified dielectrics

Chou, W. Y., Kuo, C. W., Cheng, H. L., Chen, Y. R., Yang, F. Y., Shu, D. Y., Liao, C. C. & Tang, F. C., 2006 Oct 15, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 45, 10 A, p. 7922-7924 3 p.

Research output: Contribution to journalArticle

Photopolymers
photopolymers
Thin film transistors
transistors
thin films
7 Citations (Scopus)

High-response organic thin-film memory transistors based on dipole-functional polymer electret layers

Wang, Y. F., Tsai, M. R., Lin, Y. S., Wu, F. C., Lin, C. Y., Cheng, H. L., Liu, S. J., Tang, F. C. & Chou, W. Y., 2015 Aug 14, In : Organic Electronics. 26, p. 359-364 6 p.

Research output: Contribution to journalArticle

Electrets
Functional polymers
electrets
Transistors
transistors
25 Citations (Scopus)
Fullerenes
fullerenes
Heterojunctions
heterojunctions
Solar cells
60 Citations (Scopus)

Influence of electric field on microstructures of pentacene thin films in field-effect transistors

Cheng, H. L., Chou, W. Y., Kuo, C. W., Wang, Y. W., Mai, Y. S., Tang, F. C. & Chu, S. W., 2008 Jan 24, In : Advanced Functional Materials. 18, 2, p. 285-293 9 p.

Research output: Contribution to journalArticle

Field effect transistors
Organic field effect transistors
field effect transistors
Electric fields
Thin films
35 Citations (Scopus)

Influence of measuring environment on the electrical characteristics of pentacene-based thin film transistors

Wang, Y. W., Cheng, H-L., Wang, Y. K., Hu, T. H., Ho, J. C., Lee, C. C., Lei, T. F. & Yeh, C. F., 2004 Nov 22, In : Thin Solid Films. 467, 1-2, p. 215-219 5 p.

Research output: Contribution to journalArticle

Thin film transistors
transistors
high vacuum
Carrier transport
air
40 Citations (Scopus)

Influence of molecular structure and microstructure on device performance of polycrystalline pentacene thin-film transistors

Cheng, H. L., Mai, Y. S., Chou, W. Y. & Chang, L. R., 2007 May 21, In : Applied Physics Letters. 90, 17, 171926.

Research output: Contribution to journalArticle

molecular structure
transistors
microstructure
thin films
surface energy
3 Citations (Scopus)

Initial time-dependent current growth phenomenon in n -type organic transistors induced by interfacial dipole effects

Lin, Y. S., Yeh, B. L., Tsai, M. R., Cheng, H-L., Liu, S. J., Tang, F-C. & Chou, W-Y., 2015 Mar 14, In : Journal of Applied Physics. 117, 10, 104507.

Research output: Contribution to journalArticle

polyimides
transistors
dipoles
traps
electricity
5 Citations (Scopus)

Innovative plasma alignment method in flexible liquid crystal display films

Liu, K. H., Lee, C. Y., Ho, C. T., Cheng, H. L., Lin, S. T., Tang, H. C., Kuo, C. W., Liao, C. C., Shieh, H. P. D. & Chou, W. Y., 2007 Aug 17, In : Electrochemical and Solid-State Letters. 10, 10, p. J132-J135

Research output: Contribution to journalArticle

Flexible displays
Liquid Crystals
Liquid crystal displays
polyimides
Polyimides
8 Citations (Scopus)

Ion-beam-processed SiO2 film for homogeneous liquid crystal alignment

Chou, W. Y., Ho, Z. Y., Tang, F. C., Mai, Y. S., Wu, T. Y., Cheng, H. L., Sheu, C. R., Liao, C. C. & Liu, K. H., 2005 Jun 24, In : Japanese Journal of Applied Physics, Part 2: Letters. 44, 24-27, p. L876-L878

Research output: Contribution to journalArticle

ion beams
liquid crystals
alignment
argon
cells
16 Citations (Scopus)

Light sensing in photosensitive, flexible n-type organic thin-film transistors

Chou, W. Y., Lin, Y. S., Kuo, L. L., Liu, S. J., Cheng, H. L. & Tang, F. C., 2014 Jan 28, In : Journal of Materials Chemistry C. 2, 4, p. 626-632 7 p.

Research output: Contribution to journalArticle

Thin film transistors
Switches
Photoluminescence
Electric potential
Touch screens
24 Citations (Scopus)

Long-term operations of polymeric thin-film transistors: Electricfield-induced intrachain order and charge transport enhancements of conjugated poly(3-hexylthiophene)

Cheng, H. L., Lin, J. W., Jang, M. F., Wu, F. C., Chou, W. Y., Chang, M. H. & Chao, C. H., 2009 Nov 10, In : Macromolecules. 42, 21, p. 8251-8259 9 p.

Research output: Contribution to journalArticle

Thin film transistors
Polymer films
Charge transfer
Electric fields
Excitons
21 Citations (Scopus)

Manipulating the ambipolar characteristics of pentacene-based field-effect transistors

Chiu, L. Y., Cheng, H. L., Wang, H. Y., Chou, W. Y. & Tang, F. C., 2014 Mar 14, In : Journal of Materials Chemistry C. 2, 10, p. 1823-1829 7 p.

Research output: Contribution to journalArticle

Field effect transistors
Hole mobility
Semiconducting organic compounds
Electron mobility
Organic field effect transistors
9 Citations (Scopus)
Chain length
Conformations
Chlorides
molecular weight
Salts
2 Citations (Scopus)

Morphology and luminescence properties of poly(phenylenevinylene) and poly(N-vinylpyrrolidone) polyblends

Lin, K. F., Chang, L. K. & Cheng, H. L., 1999 Dec 1, In : ACS Symposium Series. 726, p. 71-87 17 p.

Research output: Contribution to journalArticle

Excitons
Luminescence
Electroluminescence
Dilution
Photoluminescence
15 Citations (Scopus)

Nanoimprinting-induced efficiency enhancement in organic solar cells

Chou, W. Y., Chang, J., Yen, C. T., Tang, F. C., Cheng, H. L., Chang, M. H., Lien-Chung Hsu, S., Chen, J. S. & Lee, Y. C., 2011 Oct 31, In : Applied Physics Letters. 99, 18, 183108.

Research output: Contribution to journalArticle

solar cells
augmentation
heterojunctions
gratings
photoluminescence
16 Citations (Scopus)

New pentacene crystalline phase induced by nanoimprinted polyimide gratings

Chou, W-Y., Chang, M. H., Cheng, H-L., Lee, Y-C., Chang, C. C. & Sheu, H. S., 2012 Apr 19, In : Journal of Physical Chemistry C. 116, 15, p. 8619-8626 8 p.

Research output: Contribution to journalArticle

polyimides
Polyimides
polymorphism
Polymorphism
gratings
6 Citations (Scopus)

Novel method of pentacene alignment using photoaligned polyimide and its application in thin-film transistors

Chou, W-Y., Kuo, C. W., Cheng, H-L., Mai, Y. S., Lin, S. T., Liao, C. C., Chang, C. C., Tang, F-C. & Hwang, J. S., 2004 Nov 16, In : Chemistry of Materials. 16, 23, p. 4610-4615 6 p.

Research output: Contribution to journalArticle

Thin film transistors
Polyimides
Thin films
Molecules
Molecular beams
3 Citations (Scopus)

Open-circuit voltage shifted by the bending effect for flexible organic solar cells

Chou, W. Y., Yen, C. T., Wu, F. C., Cheng, H. L., Liu, S. J. & Tang, F. C., 2014 Oct 14, In : Journal of Materials Chemistry A. 2, 38, p. 15781-15787 7 p.

Research output: Contribution to journalArticle

Open circuit voltage
Semiconducting organic compounds
Electron energy levels
Photoluminescence
Polyethylene Terephthalates
16 Citations (Scopus)

Organic complementary inverters with polyimide films as the surface modification of dielectrics

Chou, W-Y., Yeh, B. L., Cheng, H-L., Sun, B. Y., Cheng, Y. C., Lin, Y. S., Liu, S. J., Tang, F-C. & Chang, C. C., 2009 Jan 1, In : Organic Electronics. 10, 5, p. 1001-1005 5 p.

Research output: Contribution to journalArticle

inverters
polyimides
Polyimides
Surface treatment
CMOS
8 Citations (Scopus)

Organic nonvolatile memory based on low voltage organic thin film transistors with polymer gate electrets

Yeh, B. L., Chen, Y. H., Chiu, L. Y., Lin, J. W., Chen, W. Y., Chen, J. S., Chou, T. H., Chou, W. Y., Tang, F. C. & Cheng, H. L., 2011 Feb 8, In : Journal of the Electrochemical Society. 158, 3, p. H277-H280

Research output: Contribution to journalArticle

Electrets
Thin film transistors
Polymers
Data storage equipment
Polymethyl Methacrylate