The electrostatic coupling of longitudinal optical phonon and plasmon in wurtzite InN thin films

Chang, Y.-M.; Liou, S. C.; Chen, C. H.; Lee, H.-M.; Gwo, S.
January 2010
Applied Physics Letters;1/25/2010, Vol. 96 Issue 4, p041908
Academic Journal
We utilize coherent longitudinal optical phonon as an optical nanoprobe to investigate the plasmonic behavior of wurtzite c-plane InN thin films. The transition from the three-dimensional electron gas in InN bulk toward the two-dimensional electron gas in InN thin film is revealed via measuring the coupling strength of coherent A1(LO) phonon and plasmon coupling mode. The coupling strength diminishes as the film thickness reduces and finally vanishes at 3±1 nm. This phenomenon is ascribed to the detuning of the intersubband plasmon frequency above the A1(LO) frequency, which is originated from the electronic quantum confinement in InN thin films.


Related Articles

  • Enhanced Bio-molecular Sensing Capability of LSPR, SPR-ATR Coupled Technique. Singh, N. Kamal; Alqudami, Abdullah; Annapoorni, S.; Sharma, Vineet; Muralidhar, K. // AIP Conference Proceedings;6/29/2009, Vol. 1147 Issue 1, p331 

    This paper gives a comparative study of two of the SPR techniques i.e. Localised surface plasmon resonance (LSPR) and Surface plasmon resonance-Attenuated total reflection (SPR-ATR) technique and coupling of the two techniques for bio-molecular sensing applications. Silver nanoparticles prepared...

  • Sol-gel synthesis and characterization of Ag nanoparticles in Zr02 thin films. Yokoyama, Eisuke; Sakata, Hironobu; Wakaki, Moriaki // Journal of Materials Research;Aug2009, Vol. 24 Issue 8, p11 

    ZrO2 thin films containing silver nanoparticles were prepared using the sol-gel method with Ag to Zr molar ratios [Ag]/[Zr] = 0.11, 0.25, 0.43, 0.67, 1.00, 1.50, and 2.33. After dip coating on glass substrate, coated films were annealed at 200 and 300 °C in air. X-ray diffraction peaks...

  • Optical properties vacuum deposited and chlorine doped a-Se thin films: aging effects. Wee Chong Tan; Belev, George; Koughia, K.; Johanson, Robert; O'Leary, Stephen K.; Kasap, Safa // Journal of Materials Science: Materials in Electronics;Oct2007 Supplement, Vol. 18, p429 

    The optical properties of cold deposited films (substrate temperature T s = 3 °C, below room temperature and the glass transition temperature T g ), hot deposited ( T s = 50 °C, above T g ) and Cl-doped a-Se films have been examined by measuring the transmission spectra and then...

  • Optical nonlinearity enhancement of graded metallic films. Huang, J.P.; Yu, K.W. // Applied Physics Letters;7/5/2004, Vol. 85 Issue 1, p94 

    The effective linear and third-order nonlinear susceptibility of graded metallic films with weak nonlinearity have been investigated. Due to the simple geometry, we were able to derive exactly the local field inside the graded structures having a Drude dielectric gradation profile. We calculated...

  • Localized surface plasmon enhanced photoluminescence from ZnO films: Extraction direction and emitting layer thickness. Cheng, Peihong; Li, Dongsheng; Li, Xiaoqiang; Liu, Tao; Yang, Deren // Journal of Applied Physics;Sep2009, Vol. 106 Issue 6, p063120-1 

    The light emission from ZnO films is enhanced by localized surface plasmon (LSP) of Ag island films. The dependence of LSP coupled emission on light-extracting direction and the thickness of ZnO films is investigated. It is found that the photoluminescence (PL) enhancement factors for upward...

  • Optical properties of SrMoO[sub 3] thin film. Mizoguchi, H.; Kitamura, N.; Fukumi, K.; Mihara, T.; Nishii, J.; Nakamura, M.; Kikuchi, N.; Hosono, H.; Kawazoe, H. // Journal of Applied Physics;5/1/2000, Vol. 87 Issue 9, p4617 

    We used an rf magnetron reactive sputtering method to prepare SrMoO[sub 3] thin film on a silica glass substrate and evaluated its optical properties. The reflectivity of the blue-colored film showed a cutoff due to plasmon at ∼1.7 eV. From a Kramers–Kronig analysis of the...

  • Temperature dependent optical properties of (002) oriented ZnO thin film using surface plasmon resonance. Shibu Saha; Mehan, Navina; Sreenivas, K.; Gupta, Vinay // Applied Physics Letters;8/17/2009, Vol. 95 Issue 7, p071106 

    Temperature dependent optical properties of c-axis oriented ZnO thin film were investigated using surface plasmon resonance (SPR) technique. SPR data for double layer (prism-Au-ZnO-air) and single layer (prism-Au-air) systems were taken over a temperature range (300–525 K). Dielectric...

  • Nonlinear optical properties of nanometer-size silver coated polydiacetylene composite vesicles and resulting Langmuir-Blodgett films. Chen, Xin; Tao, Jun; Zou, Gang; Su, Wei; Zhang, Qijin; Liu, Shiyong; Wang, Pei // Applied Physics A: Materials Science & Processing;Mar2011, Vol. 102 Issue 3, p565 

    Noble metal-coated PDA composite vesicles were expected to increase the effective third-order nonlinear optical susceptibility χ( ω), due to the enhancement of the optical electric field induced by localized surface plasmon resonance. Different size (20, 50 and 80 nm) Ag colloidal...

  • Multi-element gas sensor based on surface plasmon resonance: recognition of alcohols by using calixarene films. Kostyukevych, K. V.; Khristosenko, R. V.; Shirshov, Yu. M.; Kostyukevych, S. A.; Samoylov, A. V.; Kalchenko, V. I. // Semiconductor Physics, Quantum Electronics & Optoelectronics;2011, Vol. 14 Issue 3, p313 

    This work is devoted to development of a multi-element gas sensor based on surface plasmon resonance (SPR) to recognize some alcohols. As sensitive layers capable to change their optical properties when interacting with volatile alcohol molecules, we investigated bulk-porous sorbents --...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics