Min-Yeol Choi

Publications (4)41.63 Total impact

• Article: Nanogenerators: Fully Rollable Transparent Nanogenerators Based on Graphene Electrodes (Adv. Mater. 19/2010).

  Dukhyun Choi, Min-Yeol Choi, Won Mook Choi, Hyeon-Jin Shin, Hyun-Kyu Park, Ju-Seok Seo, Jongbong Park, Seon-Mi Yoon, Seung Jin Chae, Young Hee Lee, Sang-Woo Kim, Jae-Young Choi, Sang Yoon Lee, Jong Min Kim
  Advanced Materials 05/2010; 22(19). · 13.88 Impact Factor
• Source

  Available from: Dukhyun Choi

  Article: Fully rollable transparent nanogenerators based on graphene electrodes.

  Dukhyun Choi, Min-Yeol Choi, Won Mook Choi, Hyeon-Jin Shin, Hyun-Kyu Park, Ju-Seok Seo, Jongbong Park, Seon-Mi Yoon, Seung Jin Chae, Young Hee Lee, Sang-Woo Kim, Jae-Young Choi, Sang Yoon Lee, Jong Min Kim
  Advanced Materials 04/2010; 22(19):2187-92. · 13.88 Impact Factor
• Source

  Available from: Dukhyun Choi

  Article: Mechanically Powered Transparent Flexible Charge‐Generating Nanodevices with Piezoelectric ZnO Nanorods

  Min-Yeol Choi, Dukhyun Choi, Mi-Jin Jin, Insoo Kim, Sang-Hyeob Kim, Jae-Young Choi, Sang Yoon Lee, Jong Min Kim, Sang-Woo Kim
  Advanced Materials 03/2009; 21(21):2185 - 2189. · 13.88 Impact Factor
• Source

  Available from: Dukhyun Choi

  Article: Nanoscale networked single-walled carbon-nanotube electrodes for transparent flexible nanogenerators

  Dukhyun Choi, Min-Yeol Choi, Hyeon-Jin Shin, Seon-Mi Yoon, Ju-Seok Seo, Jae-Young Choi, Sang Yoon Lee, Min Jong, Sang-Woo Kim, Kim
  [show abstract] [hide abstract]
  ABSTRACT: We have investigated a nanoscale networked single-walled carbon-nanotube (SWCNT) electrode as a top cathode electrode of transparent flexible (TF) nanogenerators, so as to improve the energy scavenging performance and the system stability. The morphological effect and the electrical stability of SWCNT films for TF nanogenerators are investigated. It is found that SWCNT films have a nanosized network surface with pores, exceeding 100 nm in size, which favor ZnO nanorods contacting the CNT electrode, increasing the current generation and reducing the series resistance of the device for the effective transportation of piezoelectrically generated electrons from the nanogenerators. The nanogenerator using the CNT electrode with transparency 84% (at wavelength 550 nm) and a sheet resistance of 220 Ω/square had approximately 5 times the current density as with an indium-tin oxide-based nanogenerator. Moreover, the low variation (<100 Ω) in the resistance of CNT films during bending tests, and small change of the resistance of the film before and after the bending test (less than 1.1% on average), can support durable, stable, and reliable CNT-based TF nanogenerators.