Role of inversion layer formation in producing low effective surface recombination velocities at Si/liquid contacts

Royea, William J.; Michalak, David J.; Lewis, Nathan S.
October 2000
Applied Physics Letters;10/16/2000, Vol. 77 Issue 16
Academic Journal
Photoconductivity decay lifetimes have been obtained for NH[sub 4]F[sub (aq)]-etched Si(111) and for air-oxidized Si(111) surfaces in contact with solutions of CH[sub 3]OH or tetrahydrofuran (THF) containing either ferrocene[sup +/0] (Fc[sup +/0]), bis(pentamethylcyclopentadienyl) Fe[sup +/0], or I[sub 2]. Si surfaces in contact with electrolytes having Nernstian redox potentials >0 V versus the standard calomel electrode exhibited low effective surface recombination velocities regardless of the different surface chemistries, whereas those exposed only to N[sub 2(g)] ambients or to electrolytes containing mild oxidants showed differing rf photoconductivity decay behavior depending on their different surface chemistry. The data reveal that formation of an inversion layer, and not a reduced density of electrical trap sites on the surface, is primarily responsible for the long charge-carrier lifetimes observed for Si surfaces in contact with CH[sub 3]OH or THF electrolytes containing I[sub 2] or Fc[sup +/0]. © 2000 American Institute of Physics.


Related Articles

  • BASF lays cornerstone for the world's largest PolyTHF.  // Colourage;Aug2003, Vol. 50 Issue 8, p97 

    Reports on the integrated production facility for polytetrahydrofuran and tetrahydrofuran in the Shanghai Chemical Industrial Park in Caojing/Shanghai, China. Annual capacity of metric tons; Production of PolyTHF facility worldwide; Schedule of the completion of plants.

  • Influence of thermal treatment on photoconductive properties for TiOPc/SAN composites. Li-Fang Tong; Li-Wei Li; Yong-Gang Shangguan; Qiang Zheng // Journal of Materials Science Letters;Dec2003, Vol. 22 Issue 24, p1763 

    The article studies the effect of thermal treatment on photoconductive properties of titanyl phthalocyanine/poly (styrene-co-acrylonitrile) (TiOPc/SAN) films on their photosensitivity and the charging voltage. The proportion of TiOPc, SAN and phenylhydrazone in the mixture was 1:140:140 by...

  • Steady-state photoconductivity of gallum- and indium-dope hydrogenated amorphous germanium... Reis, F.T.; Comedi, D.; Chambouleyron, I. // Journal of Applied Physics;1/1/1998, Vol. 83 Issue 1, p353 

    Presents information on steady state photoconductivity. Methodology and materials used in the study; Findings of the study; Statistical data supporting the results.

  • Frequency-resolved microwave reflection photoconductance. Romanowski, A.; Buczkowski, A.; Karoui, A.; Rozgonyi, G.A. // Journal of Applied Physics;6/15/1998, Vol. 83 Issue 12, p7730 

    Provides information on a study which investigated a photoconductance methodology based on frequency resolved photoconductance (FR-PC) that allows analysis under low and well-controlled injection levels. Methodology used to conduct the study; Information on microwave reflection coefficient in...

  • Spectral diffusion in glasses under high pressure: A study by time-resolved hole-burning. Lock, A.J.; Creemers, T.M.H. // Journal of Chemical Physics;4/15/1999, Vol. 110 Issue 15, p7467 

    Studies optical dephasing and spectral diffusion of the S[sub 1]...S[sub 0] 0-0 transition of bacteriochlorophyll-a in the glass 2-methyltetrahydrofuran. Sample preparation and pressure cell; Determination of the effective homogeneous linewidth; Absorption spectra.

  • Surface viscoelastic relaxation on aqueous solutions of tetrahydrofuran. Sharpe, D.; Earnshaw, J.C. // Journal of Chemical Physics;11/8/1997, Vol. 107 Issue 18, p7493 

    Studies surface viscoelastic relaxation on aqueous solutions of tetrahydrofuran. Understanding of natural gas hydrates; Surface dilatational elastic modulus; Time constant of the process.

  • Overcoming a hemihedral twinning problem in tetrahydrofolate-dependent O-demethylase crystals by the microseeding method. Harada, Ayaka; Sato, Yukari; Kamimura, Naofumi; Venugopalan, Nagarajan; Masai, Eiji; Senda, Toshiya // Acta Crystallographica: Section F, Structural Biology Communicat;Dec2016, Vol. 72 Issue 12, p897 

    A tetrahydrofolate-dependent O-demethylase, LigM, from Sphingobium sp. SYK-6 was crystallized by the hanging-drop vapour-diffusion method. However, the obtained P3121 or P3221 crystals, which diffracted to 2.5-3.3 Ã… resolution, were hemihedrally twinned. To overcome the twinning problem,...

  • Mode selectivity in ion-molecule reactions of NH[sub 3] [sup +]. Poutsma, J.C.; Everest, M.A.; Flad, J.E.; Zare, R.N. // Applied Physics B: Lasers & Optics;2000, Vol. 71 Issue 5, p623 

    Abstract. Ammonia ions (NH[sup +, sub 3]) are prepared in two internal states of nearly the same energy, a state with five quanta in the umbrella bending mode (E[sub int] = 0.60 eV) and another state with one quantum in the all-symmetric stretch and two quanta in the umbrella bending mode (E[sub...

  • Pseudorotation in tetrahydrofuran...HF heterodimer. Alonso, J. L.; López, J. C.; Blanco, S.; Lesarri, A.; Lorenzo, F. J. // Journal of Chemical Physics;8/15/2000, Vol. 113 Issue 7 

    Seven isotopomers of the hydrogen-bonded heterodimer tetrahydrofuran...HF have been investigated in the frequency range 6-18 GHz using molecular-beam Fourier transform microwave spectroscopy. The rotational spectra of C[sub 4]H[sub 8]O...HF and C[sub 4]H[sub 8]O...DF exhibit small tunneling...


Read the Article


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

Try another library?
Sign out of this library

Other Topics