Publications

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Hong, WK, Chen KH, Chen LC, Tarntair FG, Chen KJ, Lin JB, Cheng* HC.  2001.  Fabrication and characterization of carbon nanotubes triodes. Jpn. J. Appl. Phys.. 40:3468-3473.
Juan, CP, Tsai CC, Chen KH, Chen LC, Cheng HC.  2005.  Fabrication and characterization of lateral field emission device based on carbon nanotubes. Jpn. J. Appl. Phys.. 44:2612-2617.
Cheng*, HC, Chen KJ, Hong WK, Tarntair FG, Lin JB, Chen KH, Chen LC.  2001.  Fabrication and characterization of low turn-on voltage carbon nanotube field emission triodes. Electrochemical and Solid-State Letters. 4 (8):H15-17.
Chen, WC, Tunuguntla V, Li HW, Chen CY, Li SS, Hwang JS, Lee CH, Chen LC, Chen KH.  2016.  Fabrication of Cu2ZnSnSe4 solar cells through multi-step selenization of layered metallic precursor film. Thin Solid Films .
Lin, YR, Chou TC, Liu LK, Chen LC, Chen KH.  2016.  A facile and green synthesis of copper zinc tin sulfide materials for thin film photovoltaics. Thin Solid Films.
Chang, M-C, Ho P-H, Tseng M-F, Lin F-Y, Hou C-H, Lin I-K, Wang H, Huang P-P, Chiang C-H, Yang Y-C, Wang I-T, Du H-Y, Wen C-Y, Shyue J-J, Chen C-W, Chen K-H, Chiu P-W, Chen L-C.  2020.  Fast growth of large-grain and continuous MoS2 films through a self-capping vapor-liquid-solid method, 2020. 11(1):3682. AbstractWebsite

Most chemical vapor deposition methods for transition metal dichalcogenides use an extremely small amount of precursor to render large single-crystal flakes, which usually causes low coverage of the materials on the substrate. In this study, a self-capping vapor-liquid-solid reaction is proposed to fabricate large-grain, continuous MoS2 films. An intermediate liquid phase-Na2Mo2O7 is formed through a eutectic reaction of MoO3 and NaF, followed by being sulfurized into MoS2. The as-formed MoS2 seeds function as a capping layer that reduces the nucleation density and promotes lateral growth. By tuning the driving force of the reaction, large mono/bilayer (1.1 mm/200 μm) flakes or full-coverage films (with a record-high average grain size of 450 μm) can be grown on centimeter-scale substrates. The field-effect transistors fabricated from the full-coverage films show high mobility (33 and 49 cm2 V−1 s−1 for the mono and bilayer regions) and on/off ratio (1 ~ 5 × 108) across a 1.5 cm × 1.5 cm region.

Dhara*, S, Sundaravel B, Nair KGM, Kesavamoorthy R, Valsakumar MC, Rao CTV, Chen LC, Chen KH.  2006.  Ferromagnetism in cobalt doped n-GaN. Appl. Phys. Lett.. 88:173110-(1-3).
Chen*, LC, Hong WK, Tarntair FG, Chen KJ, Lin JB, Kichambare PD, Cheng HC, Chen KH.  2001.  Field electron emission from C-based emitters and devices. New Diamond and Frontier Carbon Technology. 11:249-263.
Chen*, LC, Hong WK, Tarntair FG, Chen KJ, Lin JB, Kichambare PD, Cheng HC, Chen KH.  2001.  Field electron emission from carbon-based emitters and devices. New Diamond and Frontier Carbon Tech.. 11:249.
Kan, MC, Huang* JL, Sung J, Lii DF, Chen KH.  2003.  Field emission characteristics of amorphous diamond. J. Am. Cherem. Soc.. 86:1513-1517.
Ray, SC, Palnitkar U, Pao CW, Tsai HM, Pong* WF, Lin I-N, Papakonstantinou P, Ganguly A, Chen LC, Chen KH.  2008.  Field emission effects of nitrogenated carbon nanotubes on chlorination and oxidation. J. Appl. Phys.. 104:063710.
Shi, SC, Chen CF, Chattopadhyay S, Chen KH, Chen* LC.  2005.  Field Emission from Quasi-aligned Aluminum Nitride Nanotips. Appl. Phys. Lett.. 87:73109-(1-3).
Tarntair, FG, Wen CY, Chen LC, Wu JJ, Chen KH, Kuo PF, Chang SW, Chen YF, Hong WK, Cheng HC.  2000.  Field emission from quasi-aligned SiCN nanorods. Appl. Phys. Lett.. 76:20.
Lin, HY, Chen YC, Lin CY, Tong YP, Hwa LG, Chen KH, Chen* LC.  2002.  Field emission of nanostructured amorphous SiCN films deposited by reactive magnetron sputtering of SiC in CH4/N2atmosphere. Thin Solid Films. 416:85-91.
Tarntair, FG, Wu JJ, Chen KH, Wen CY, Chen* LC, Cheng HC.  2001.  Field emission properties of two-layer structured SiCN films. Surface & Coating Tech.. 137:152-157.
Jana, D, Chen LC, Chen CW, Chattopadhyay S, Chen KH.  2007.  A first principles study of the optical properties of BxCy single wall nanotubes. Carbon. 45:1482-1491.
Jana*, D, Chakraborti A, Chen LC, Chen CW, Chen KH.  2009.  A first principles study of the optical properties of CxNy single walled nanotubes. Nanotechnology. 20:175701.
K.P.O., M, Shown I, Chen L-C, Chen K-H, Tai Y.  2018.  Flexible sensor for dopamine detection fabricated by the direct growth of α-Fe2O3 nanoparticles on carbon cloth, 2018. Applied Surface Science. 427:387-395. AbstractWebsite

AbstractPorous α-Fe2O3 nanoparticles are directly grown on acid treated carbon cloth (ACC) using a simple hydrothermal method (denoted as ACC-α-Fe2O3) for employment as a flexible and wearable electrochemical electrode. The catalytic activity of ACC-α-Fe2O3 allowing the detection of dopamine (DA) is systematically investigated. The results showed that the ACC-α-Fe2O3 electrode exhibits impressive electrochemical sensitivity, stability and selectivity for the detection of DA. The detection limit determined with the amperometric method appears to be around 50nM with a linear range of 0.074–113μM. The impressive DA sensing ability of the as prepared ACC-α-Fe2O3 electrode is due to the good electrochemical behavior and high electroactive surface area (19.96cm2) of α-Fe2O3 nanoparticles anchored on the highly conductive ACC. It is worth noting that such remarkable sensing properties can be maintained even when the electrode is in a folded configuration.

Horng, YY, Lu YC, Hsu YK, Chen CC, Chen LC, Chen* KH.  2010.  Flexible supercapacitor based on polyaniline nanowires/carbon cloth with both high gravimetric and area-normalized capacitance. J. Power Sources. 195:4418-4422.
Dhara, S, Yao LC, Wu CT, Hsu CW, Tu WS, Chen KH, Wang YL, Chen LC.  2010.  Focused ion beam induced nanowelding and defect doping as building block for nanoscale electronics in GaN nanowires. J. Phys. Chem.. C114:15260.
Datta, A, Dhara* S, Muto S, Hsu CW, Wu CT, Shen CH, Tanabe T, Maruyama T, Chen KH, Chen LC, Wang YL.  2005.  Formation and in-situ dynamics of metallic nanoblisters in self-ion-implanted GaN nanowires. Nanotechnology. 16:2764-2769.
Chen, LC, Yang CY, Bhusari DM, Chen KH, Lin MC, Lin JC, Chuang TJ.  1996.  Formation of Crystalline Silicon Carbon Nitride Films by Microwave Plasma-Enhanced CVD. Diamond and Related Materials. 5:514.
Sarma, LS, Chen CH, Kumar SMS, Wang GR, Yen SC, liu DG, Sheu HS, Yu KL, Tang MT, Lee JF, Bock C, Chen KH, Hwang* BJ.  2007.  Formation of Pt-Ru nanoparticles in ethylene glycol solution: an in situ X-ray absorption spectroscopy study. Langmuir. 23:5802-5809.
Ganguly, A, Chen CP, Lai YT, Kuo CC, Hsu CW, Chen* KH, Chen* LC.  2009.  Functionalized GaN nanowires-based electrode for direct label-free voltammetric detection of DNA hybridization. J. Mater. Chem.. 19:928–933.
Nataraj, SK, Wang CH, Huang HC, Du HY, Chen LC, Chen KH.  2015.  Functionalizing biomaterials to be an efficient proton-exchange membrane and methanol barrier for DMFCs. ACS Sustainable Chemistry & Engineering . 3:302.