期刊論文

期刊論文（Journal Paper）
  1. Liu. W.-S., Chien-Lung Huang, Yi-Hung Lin, Yi-Ming Chu and Chih-Hao Hsu, “Improving device characteristics of IGZO thin-film transistors by using pulsed DC magnetron sputtering deposition” , 2018.
  2. Liu. W.-S. , Wei-Ting Hsieh, and Shih-Yuan Chen, and Chien-Sheng Huang, “Improvement of CIGS solar cells with high performance transparent conducting Ti-doped GaZnO thin films”, Solar Energy Volume 174, 1 November 2018, Pages 83-96.DOI:10.1016/j.solener.2018.08.050
  3. Liu. W.-S. ,Lin. Y.-H. , Huang. C.-L. , and Wang. C.-W. , “Device Performance Improvement of Transparent Thin-Film Transistors with a Ti-doped GaZnO/ InGaZnO/ Ti-doped GaZnO Sandwich Composite-Channel Structure”, IEEE Transactions on Electron Devices, Volume 64, No. 6, 64 (2), pp 2533–2541, 2017 (Rank:37/249, IF: 2.6, Engineering, Electrical & Electronic, SCI) DOI:10.1109/TED.2017.2696956
  4. Liu. W.-S.,  Liu. R.-Y., and Lin. H.-C., "Tailoring energy band alignment of vertically aligned InGaAs quantum dots capped with GaAs(Sb)/AlGaAsSb composite structure after thermal annealing treatment", ACS Photonics, 4(2), pp 242-250, (2017) (Rank:6/90, IF:5.4, OPTICS, SCI) DOI: 10.1021/acsphotonics.6b00480
  5. Liu. W.-S., Lin. H.-C., and Liu. R.-Y., "Capping vertically aligned InGaAs/GaAs(Sb) quantum dots with a AlGaASSb spacer layer in intermediate-band solar cell devices", Progress in Photovoltaics: Research and Applications, Volume 25, Issue 1:76-86, (2017) (Rank:5/88, IF:9.696, Energy & Fuels, SCI/EI) DOI: 10.1002/pip.2815
  6. Liu. W.-S., Chen. Y.-F., Wang. Y.-M., "Capping Ti-Doped GaZnO on InGaZnO layer as the composite channel structure for enhancing the device performances and stability of thin-film transistors", IEEE/OSA Journal of Display Technology, PP(99), 7559808, (2016) (Rank:47/249, IF:2.24, ENGINEERING, ELECTRICAL & ELECTRONIC, SCI/EI) DOI: 10.1109/JDT.2016.2605703
  7. Liu. W.-S., Wang. Y.-M. "Enhancing transparent thin-film transistor device performances by using the Ti-doped GaZnO channel layer”, RSC Advances, 5, 104392 - 104399 (2015) (Rank: 33/157, IF: 3.84, Chemistry, SCI/EI) DOI: 10.1039/C5RA14858H
  8. Pu. N.-W., Liu, W.-S., Cheng. H.-M., Hu. H.-C. Hu, Hsieh. W.-T., Yu. H.-W., Liang. S.-C. “Investigation of the Optoelectronic Properties of Ti-doped Indium Tin Oxide Thin Film”, (2015) Materials, 8, pp. 6471-6481. (Rank: 54/259, IF: 2.651, MATERIALS SCIENCE) DOI:10.3390/ma8095316
  9. Liu, W.-S., Cheng. H.-M., Hu. H.-C., Li. Y.-T., Huang. S.-D., Yu. H.-W., Pu. N.-W., Liang. S.-C. “Indium tin oxide with titanium doping for transparent conductive film application on CIGS solar cells”, (2015) Applied Surface Science, 354, pp. 31-35. (Rank: 2/18, IF: 2.71, MATERIALS SCIENCE, COATINGS & FILMS, SCI,EI) DOI:10.1016/j.apsusc.2015.02.130
  10. Liu, W.-S., Hu, H.-C., Pu, N.-W., Liang, S.-C. “Developing flexible CIGS solar cells on stainless steel substrates by using Ti/TiN composite structures as the diffusion barrier layer”, (2015) Journal of Alloys and Compounds, 631, pp. 146-152. (Rank: 4/76, IF: 2.99,SCI,EI) DOI: 10.1016/j.jallcom.2014.12.189
  11. Liu, W.-S., Wu, S.-Y., Hung, C.-Y., Tseng, C.-H., Chang, Y.-L. “Improving the optoelectronic properties of gallium ZnO transparent conductive thin films through titanium doping”, (2014) Journal of Alloys and Compounds, 616, pp. 268-274. (Rank: 4/75, IF: 2.39,SCI,EI) DOI: 10.1016/j.jallcom.2014.06.175
  12. Liu, W.-S., Chang, C.-H., Wu, S.-Y., Huang, J.-L., Hung, C.-Y., Chang, Y.-L., Wu, Y.-C., Chen, W.-C., Wu, Y.-C. “Ga-doped TiZnO transparent conductive oxide used as an alternative anode in blue, green, and red phosphorescent OLEDs”, (2014) Physical Chemistry Chemical Physics, 16 (36), pp. 19618-19624. (Rank: 5/33, IF: 4.198, SCI,EI) DOI: 10.1039/c4cp02924k
  13. Liu, W.-S., Tseng, H.-L., Kuo, P.-C. “Enhancing optical characteristics of InAs/InGaAsSb quantum dot structures with long-excited state emission at 1.31 μm”, (2014) Optics Express, 22 (16), pp. 18860-18869. (Rank: 6/83, IF: 3.525,SCI,EI) DOI: 10.1364/OE.22.018860
  14. Liu, W.-S., Chen, W.-K., Wu, S.-Y., Hsueh, K.-P. “Improved crystal quality of transparent conductive Ga -doped ZnO films by magnesium doping through radio-frequency magnetron sputtering preparation”, (2014) Journal of the American Ceramic Society, 97 (2), pp. 473-480. (Rank: 2/26, SCI,EI) DOI: 10.1111/jace.12630
  15. Liu, W.-S., Chen, Y.-F., Wang, Y.-M. “Improvement of device characteristics of transparent thin-film transistors by using GaTiZnO/InGaZnO4 composite-channel structure”, (2014) Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, 6867148, pp. 133-136. DOI: 10.1109/AM-FPD.2014.6867148
  16. Liu, W.-S., Wu, S.-Y., Tseng, C.-H., Hung, C.-Y. “Quality improvement of high-performance transparent conductive Ti-doped GaZnO thin film”, (2014) Thin Solid Films, 570 (PB), pp. 568-573. (Rank: 6/18, IF:1.867 ,SCI,EI) DOI: 10.1016/j.tsf.2014.05.028
  17. Liu, W.-S., Chu, T.-F., Huang, T.-H. “Energy band structure tailoring of vertically aligned InAs/GaAsSb quantum dot structure for intermediate-band solar cell application by thermal annealing process”, (2014) Optics Express, 22 (25), pp. 30963-30974. (Rank:6/83, IF: 3.525,SCI,EI) DOI: 10.1364/OE.22.030963
  18. Liu, W.-S., Hu, H.-C., Pu, N.-W., Liang, S.-C. “Using a Ti/TiN composite structure as the diffusion barrier layer for CIGS solar cell application on stainless steel substrates”, (2014) Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, 6867182, pp. 245-248.DOI: 10.1109/AM-FPD.2014.6867182
  19. Huang, J.Y., Lin, C.Y., Liu, W.-S., Chyi, J.-I. “Quantum control study of ultrafast optical responses in semiconductor quantum dot devices”, (2014) Optics Express, 22 (25), pp. 30815-30825. (Rank:6/83, IF: 3.525,SCI,EI) DOI: 10.1364/OE.22.030815
  20. Liu, W.-S., Wang, Y.-T., Chang, C.-M., Qiu, W.-Y., Fang, C. “Study of carrier dynamics of vertically aligned InAs/GaAsSb quantum dot structures”, (2013) Physica Status Solidi (C) Current Topics in Solid State Physics, 10 (11), pp. 1489-1491. (EI, 2013) DOI: 10.1002/pssc.201300248
  21. Liu, W.-S., Wu, S.-Y., Tseng, C.-H., Hung, C.-Y. “Development of high-quality titanium-doped gallium ZnO transparent conductive films by RF magnetron sputtering techniques”, (2013) Physica Status Solidi (C) Current Topics in Solid State Physics, 10 (11), pp. 1569-1572. (EI, 2013) DOI: 10.1002/pssc.201300254
  22. Liu, W.-S. “Enhancing device characteristics of 1.3 μm emitting InAs/GaAs quantum dot lasers through dot-height uniformity study”, (2013) Journal of Alloys and Compounds, 571, pp. 153-158. (Rank: 4/75, SCI,EI) DOI: 10.1016/j.jallcom.2013.03.197
  23. Liu, W.-S., Wang, Y.-T., Qiu, W.-Y., Fang, C. “Carrier dynamics of a type-ii vertically aligned InAs quantum dot structure with a GaAsSb strain-reducing layer”, (2013) Applied Physics Express, 6 (8), 085001. (Rank: 22/127, SCI,EI) DOI: 10.7567/APEX.6.085001
  24. Liu, W.-S., Liu, Y.-H., Chen, W.-K., Hsueh, K.-P. “Transparent conductive Ga-doped MgZnO/Ag/Ga-doped MgZnO sandwich structure with improved conductivity and transmittance”, (2013) Journal of Alloys and Compounds, 564, pp. 105-113. (Rank:4/75, SCI, EI) DOI: 10.1016/j.jallcom.2013.01.189
  25. Liu, W.-S., Chen, W.-K., Hsueh, K.-P. “Transparent conductive Ga-doped MgxZn1-xO films with high optical transmittance prepared by radio frequency magnetron sputtering”, (2013) Journal of Alloys and Compounds, 552, pp. 255-263. (Rank:4/75, SCI, EI) DOI: 10.1016/j.jallcom.2012.10.066
  26. Liu, W.-S., Tseng, H.-L., Huang, T.-H., Chu, T.-F., Kuo, P.-C., Tsao, F.-H., Chyi, J.-I. “Characteristic improvements of vertically aligned columnar quantum dot solar cell with a GaAsSb capping layer”, (2012) Proceedings of SPIE - The International Society for Optical Engineering, 8471, 84710K. (EI) DOI: 10.1117/12.929412
  27. Liu, W.-S., Wu, H.-M., Tsao, F.-H., Hsu, T.-L., Chyi, J.-I. “Improving the characteristics of intermediate-band solar cell devices using a vertically aligned InAs/GaAsSb quantum dot structure”, (2012) Solar Energy Materials and Solar Cells, 105, pp. 237-241. (Rank:26/232, SCI, EI) DOI: 10.1016/j.solmat.2012.06.023
  28. Hsueh, K.-P., Cheng, Y.-C., Lin, W.-Y., Chiu, H.-C., Huang, Y.-P., Chi, G.-C., Liu, W.-S. “Physical properties of Al-doped MgZnO film grown by RF magnetron sputtering using ZnO/MgO/Al2O3 target”, (2011) Proceedings of SPIE - The International Society for Optical Engineering, 8110, 81100X. (EI) DOI: 10.1117/12.891269
  29. Liu, W.-S., Wu, H.-M., Liao, Y.-A., Chyi, J.-I., Chen, W.-Y., Hsu, T.-M. “High optical property vertically aligned InAs quantum dot structures with GaAsSb overgrown layers”, (2011) Journal of Crystal Growth, 323 (1), pp. 164-166. (Rank:81/232, SCI, EI) DOI: 10.1016/j.jcrysgro.2010.10.136
  30. Wu, D.-C., Un, Y.-C., Mao, M.-H., Liu, W.-S., Chiu, P.-C., Chyi, J.-I., Wang, J.S., Lin, G., Chi, J.Y. “Temperature dependences of quantum-dot laser thresholds under simultaneously three-state or two-state lasing operations”, (2008) 2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS, 4551427. DOI: 10.1109/CLEO.2008.4551427
  31. Shi, J.-W., Li, Y.-T., Pan, C.-L., Chiu, C.-H., Liu, W.-S., Chyi, J.-I. “Characterization of a sub-THz photonic transmitter based on a separated-transport-recombination photodiode”,(2007) Conference on Lasers and Electro-Optics, 2007, CLEO 2007, 4452663. DOI: 10.1109/CLEO.2007.4452663
  32. Chiu, P.-C., Liu, W.-S., Shiau, M.-J., Chyi, J.-I., Chen, W.-Y., Chang, H.-S., Hsu, T.-M. “Enhancing the optical properties of InAs quantum dots by an InAlAsSb overgrown layer”, (2007) Applied Physics Letters, 91 (15), 153106. (Rank:17/125,SCI, EI) DOI: 10.1063/1.2798601
  33. Chiu, P.-C., Liu, W.-S., Shiau, M.-J., Chyi, J.-I., Chen, W.-Y., Chang, H.-S., Hsu, T.-M. “High optical quality of InAs quantum dots with an InAlAsSb strain-reducing layer”, (2007) Conference Proceedings - International Conference on Indium Phosphide and Related Materials, 4265906, pp. 171-173. (EI) DOI: 10.1109/ICIPRM.2007.381149 
  34. Li, Y.-T., Shi, J.-W., Pan, C.-L., Chiu, C.-H., Liu, W.-S., Chen, N.-W., Sun, C.-K., Chyi, J.-I. “Sub-THz photonic-transmitters based on separated-transport-recombination photodiodes and a micromachined slot antenna”, (2007) IEEE Photonics Technology Letters, 19 (11), pp. 840-842. (Rank:42/245,SCI, EI) DOI: 10.1109/LPT.2007.897439
  35. Shi, J.-W., Li, Y.-T., Pan, C.-L., Chiu, C.-H., Liu, W.-S., Chyi, J.-I. “Characterization of a sub-THz photonic transmitter based on a separated-transport-recombination photodiode”, (2007) Optics InfoBase Conference Papers. Scopus.
  36. Liu, W.-S., Kuo, D.M.T., Chyi, J.-I., Chen, W.-Y., Chang, H.-S., Hsu, T.-M. “Enhanced thermal stability and emission intensity of InAs quantum dots covered by an InGaAsSb strain-reducing layer”, (2006) Applied Physics Letters, 89 (24), 243103. (Rank:17/125,SCI, EI) DOI: 10.1063/1.2405872
  37. Lu, J.-Y., Chen, L.-J., Kao, T.-F., Chang, H.-H., Sun, C.-K., Liu, A-S., Yu, Y.-C., Wu, R.-B., Liu, W.-S., Chyi, J.-I. “Terahertz biochip for illicit drug detection”, (2006) Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006, 4627813. DOI: 10.1109/CLEO.2006.4627813
  38. Shi, J.-W., Li, Y.-T., Pan, C.-L., Lin, M.-L., Wu, Y.-S., Liu, W.-S., Chyi, J.-I. “Separated-transport-recombination p-i-n photodiode (STR-PD) with high-speed and high-power performance under Continuous-Wave (CW) operation”, (2006) Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006, 4628282. (Rank:42/245,SCI, EI) DOI: 10.1109/CLEO.2006.4628282
  39. Lu, J.-Y., Chen, L.-J., Kao, T.-F., Chang, H.-H., Chen, H.-W., Liu, A.-S., Chen, Y.-C., Wu, R.-B., Liu, W.-S., Chyi, J.-I., Sun, C.-K. “Terahertz microchip for illicit drug detection”, (2006) IEEE Photonics Technology Letters, 18 (21), pp. 2254-2256. (Rank:42/245,SCI, EI) DOI: 10.1109/LPT.2006.883285
  40. Shi, J.-W., Li, Y.-T., Pan, C.-L., Lin, M.-L., Wu, Y.-S., Liu, W.-S., Chyi, J.-I. “Bandwidth enhancement phenomenon of a high-speed GaAs-AlGaAs based unitraveling carrier photodiode with an optimally designed absorption layer at an 830 nm wavelength”, (2006) Applied Physics Letters, 89 (5), 053512. (Rank:17/125,SCI, EI) DOI: 10.1063/1.2267088
  41. Liu, W.-S., Chang, H., Liu, Y.-S., Chyi, J.-I. “Pinholelike defects in multistack 1.3 μm InAs quantum dot laser”, (2006) Journal of Applied Physics, 99 (11), 114514. (Rank:37/125,SCI, EI) DOI: 10.1063/1.2202195
  42. Kao, T.-F., Chang, H.-H., Chen, L.-J., Lu, J.-Y., Liu, A.-S., Yu, Y.-C., Wu, R.-B., Liu, W.-S., Chyi, J.-I., Sun, C.-K. “Frequency tunability of terahertz photonic transmitters”, (2006) Applied Physics Letters, 88 (9), 093501. (Rank:17/125,SCI, EI) DOI: 10.1063/1.2176848
  43. Kao, T.-F., Chen, L.-J., Chang, H.-H., Lu, J.-Y., Liu, A.-S., Yu, Y.-C., Wu, R.-B., Liu, W.-S., Chyi, J.-I., Sun, C.-K. “Broadband-response and frequency-tunable terahertz photonic transmitters with high efficiency”, (2006) Optics InfoBase Conference Papers. (EI) Scopus.
  44. Liu, W.-S., Chang, H., Chyi, J.-I. “Effects of dot height uniformity on the performance of 1.3 μm InAs quantum dot lasers”, (2005) 2005 5th IEEE Conference on Nanotechnology, 2, 1500648, pp. 51-54. (EI) DOI: 10.1109/NANO.2005.1500648
  45. Mao, M.-H., Su, L.-C., Wang, K.-C., Liu, W.-S., Chiu, P.-C., Chyi, J.-I. “Spectrally-resolved dynamics of two-state lasing in quantum-dot lasers”, (2005) Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 2005, 1547867, pp. 39-40. (EI) DOI: 10.1109/LEOS.2005.1547867
  46. Lu, J.-Y., Chen, L.-J., Kao, T.-F., Chang, H.-H., Liu, A.-S., Yu, Y.-C., Wu, R.-B., Liu, W.-S., Chyi, J.-I., Pan, C.-L., Tsai, M.-C., Sun, C.-K. “Terahertz biochip based on optoelectronic devices”, (2005) Proceedings of SPIE - The International Society for Optical Engineering, 6013, 60130I. (EI) DOI: 10.1117/12.630033
  47. Kao, T.-F., Chen, L.-J., Chang, H.-H., Lu, J.-Y., Liu, A.-S., Yu, Y.-C., Wu, R.-B., Liu, W.-S., Chyi, J.-I., Sun, C.-K. “Broadband-response and frequency-tunable terahertz photonic transmitters with high efficiency”, (2005) 2005 Conference on Lasers and Electro-Optics, CLEO, 2, CTuBB6, pp. 1132-1134. (EI) Scopus.
  48. Shi, J.-W., Hsu, H.-C., Huang, F.-H., Liu, W.-S., Chyi, J.-I., Lu, J.-Y., Sun, C.-K., Pan, C.-L. “Separated-transport-recombination p-i-n photodiode for high-speed and high-power performance”, (2005) IEEE Photonics Technology Letters, 17 (8), pp. 1722-1724. (Rank:42/245,SCI, EI) DOI: 10.1109/LPT.2005.850886
  49. Liu, W.-S., Chyi, J.-I. “Optical properties of InAs quantum dots with InAlAsInGaAs composite matrix”, (2005) Journal of Applied Physics, 97 (2), 024312. (Rank:37/125,SCI, EI) DOI: 10.1063/1.1829147
  50. Kao, T.-F., Chen, L.-J., Chang, H.-H., Lu, J.-Y., Liu, A.-S., Yu, Y.-C., Wu, R.-B., Liu, W.-S., Chyi, J.-I., Sun, C.-K. “Broadband-response and frequency-tunable terahertz photonic transmitters with high efficiency”, (2005) Optics InfoBase Conference Papers. (EI) Scopus.
  51. Jiang, L., Li, S.S., Liu, W.-S., Yeh, N.-T., Chyi, J.-I. “A two-stack, multi-color in 0.5Ga0.5As/GaAs and InAs/GaAs quantum dot infrared photodetector for long wavelength infrared detection”, (2005) Infrared Physics and Technology, 46 (3), pp. 249-256. (SCI, EI) DOI: 10.1016/j.infrared.2004.04.003
  52. Liu, W.-S., Chyi, J.-I. “Optical properties of InAs quantum dots with InAlAs/InGaAs composite matrix”, (2004) Conference Proceedings - International Conference on Indium Phosphide and Related Materials, pp. 272-275. (EI) Scopus.
  53. Tien, M.-C., Chang, H.-H., Lu, J.-Y., Chen, L.-J., Chen, S.-Y., Wu, R.-B., Liu, W.-S., Chyi, J.-I., Sun, C.-K. “Device Saturation Behavior of Submillimeter-Wave Membrane Photonic Transmitters”, (2004) IEEE Photonics Technology Letters, 16 (3), pp. 873-875. (Rank:42/245,SCI, EI) DOI: 10.1109/LPT.2004.823774
  54. Chiu, H.-C., Yang, S.-C., Chan, Y.-J., Chen, S.-H., Liu, W.-S., Chyi, J.-I. “The microwave power performance comparisons of AlxGa1-xAs/In0.15Ga0.85As (x = 0.3, 0.5, 0.7, 1.0) doped-channel HFETs”, (2004) IEEE Transactions on Electron Devices, 51 (1), pp. 156-158. (SCI, EI) DOI: 10.1109/TED.2003.820646
  55. Sun, C.-K., Tien, M.-C., Chang, H.-H., Lu, J.-Y., Chen, L.-J., Chen, S.-Y., Wu, R.-B., Liu, W.-S., Chyi, J.-I. “Conversion efficiency and device behavior of edge-coupled membrane photonic transmitters”, (2003) Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 1, pp. 330-331. (EI) Scopus.
  56. Yeh, N.-T., Liu, W.-S., Chen, S.-H., Chiu, P.-C., Chyi, J.-I. “InAs/GaAs quantum dot lasers with InGaP cladding layer grown by solid-source molecular-beam epitaxy”, (2002) Applied Physics Letters, 80 (4), pp. 535-537. (Rank:17/125,SCI, EI) DOI: 10.1063/1.1445269
  57. Yeh, N.-T., Liu, W.-S., Chen, S.-H., Chyi, J.-I. “Effects of spacer thickness on the performance of InGaAs/GaAs quantum dot lasers”, (2001) Materials Research Society Symposium - Proceedings, 642, pp. J3.21.1-J3.21.6.Scopus.
  58. Yeh, N.-T., Liu, W.-S., Chen, S.-H., Chiu, P.-J., Chyi, J.-I. “InAs/GaAs quantum dot lasers with InGaP cladding layer grown by solid-source molecular beam epitaxy”, (2001) Conference Proceedings - International Conference on Indium Phosphide and Related Materials, pp. 87-90. Scopus.

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