Effect of finite-energy acoustic phonons on the zero-field mobility characteristics of high-purity semiconductors at low lattice temperatures

1993 ◽  
Vol 47 (20) ◽  
pp. 13858-13860 ◽  
Author(s):  
A. K. Ghorai ◽  
D. P. Bhattacharya
Keyword(s):  
High Purity ◽  
Finite Energy ◽  
Zero Field ◽  
Acoustic Phonons ◽  
Field Mobility

Hole transport parameters in a PTOPT based organic solar cell

2010 ◽  
Vol 88 (4) ◽  
pp. 253-256 ◽  
Author(s):  
Bizuneh Gebremichael ◽  
Genene Tessema
Keyword(s):  
Organic Solar Cell ◽  
Hole Transport ◽  
Zero Field ◽  
Transport Parameters ◽  
Limited Region ◽  
Electric Field Dependence ◽  
Pv Cell ◽  
Activation Factor ◽  
Field Mobility ◽  
Sandwich Type

The photovoltaic and charge transport properties of solar cells whose active layer is made from poly[3-(4-octylphenyl)-2, 2′-bithiophene](PTOPT) was studied. Devices are prepared in a sandwich-type structure of the form Al/PTOPT/PEDOT:PSS/ITO. The diodes showed good rectification needed for the PV cell. The symmetric nature of the semilogarithmic J–V plot under dark and low temperature reveals that there is a unipolar charge injection in both sides of the electrodes. Based on the space charge limited region J–V data, it was possible to study the electric field dependence of the hole transport, which enable us to derive important parameters such as the zero field mobility (μo) and the field activation factor (γ).

Propagation of nonequilibrium acoustic phonons in high-purity coarse-grained ZnTe

2003 ◽  
Vol 45 (11) ◽  
pp. 2039-2043 ◽  
Author(s):  
V. S. Bagaev ◽  
T. I. Galkina ◽  
A. I. Sharkov ◽  
A. Yu. Klokov ◽  
V. P. Martovitskii ◽  
...  
Keyword(s):  
High Purity ◽  
Coarse Grained ◽  
Acoustic Phonons

Zero‐field mobility of excess electrons in dense methane gas

1977 ◽  
Vol 67 (10) ◽  
pp. 4636-4639 ◽  
Author(s):  
Ned E. Cipollini ◽  
Richard A. Holroyd ◽  
Masaru Nishikawa
Keyword(s):  
Zero Field ◽  
Methane Gas ◽  
Field Mobility ◽  
Excess Electrons

Electron recombination and diffusion in CO at elevated temperature

1969 ◽  
Vol 47 (17) ◽  
pp. 1789-1795 ◽  
Author(s):  
Michael H. Mentzoni ◽  
James Donohoe
Keyword(s):  
Room Temperature ◽  
Diagnostic Techniques ◽  
Zero Field ◽  
Time Decay ◽  
Electron Recombination ◽  
Average Temperature ◽  
Field Mobility ◽  
Ion Recombination ◽  
Pressure Interval ◽  
And Diffusion

The electron time decay in an afterglow following a short pulsed d.c. discharge in CO has been investigated using microwave diagnostic techniques. The gas was heated to an average temperature of 775 °K. Two-body electron-ion recombination and ambipolar diffusion were found to be the only important electron removal mechanisms present in the pressure interval [Formula: see text] Torr with the rate constants αr = 3.9 × 10−7 cm3 s−1 and Dap0 = 372 cm2 s−1 Torr respectively. If we postulate a T−γ dependence for αr, comparison with room temperature results yields γ = 0.57. The diffusion coefficient appears to increase strongly with temperature based upon an estimated zero field mobility for CO+in CO at 273 °K found in the literature.

scholarly journals The Mobility of Li + Ions in Helium and Argon

1985 ◽  
Vol 38 (4) ◽  
pp. 587 ◽  
Author(s):  
RA Cassidy ◽  
MT Elford
Keyword(s):  
Thermal Equilibrium ◽  
Drift Tube ◽  
Cluster Ions ◽  
Zero Field ◽  
Number Density ◽  
Field Mobility ◽  
Mass Spectrometer System ◽  
Cluster Ion ◽  
Spectrometer System ◽  
Reduced Mobility

A drift tube-mass spectrometer system employing Bradbury-Nielsen shutters has been used to measure the mobility of Li + ions in He at 294 and 80 K and Li + ions in Ar at 294 K. The E/N range used was 3 to 80 Td (1 Td == 10 - 21 Y cm2). The zero field reduced mobility for Li + in He was found to be 22�81�0�11 cm2 y-1 s-I at 294 K and 19�64�0�29 cm2 y-1 s-I at 80 K. The value for Li+ in Ar at 294 K is 4�66�0�22 cm2 y-1 s-I. The reduced zero field mobility for the cluster ion Li +. He in He at 80 K and low values of E/ N was found to be 14�84 � 0�22 cm2 y -I s - I. The equilibrium constant for the formation and dissociation of Li + . Ar cluster ions at 294 K was obtained by fitting to the variation of the measured mobility with gas number density at low E/N values. The value obtained, corresponding to thermal equilibrium at 294 K, was (4�0.5)xlO- 19 cm3 .

Hot-electron zero-field mobility and diffusion in rare-gas moderators

1985 ◽  
Vol 31 (3) ◽  
pp. 1894-1905 ◽  
Author(s):  
Darryl R. A. McMahon ◽  
Bernie Shizgal
Keyword(s):  
Rare Gas ◽  
Zero Field ◽  
Hot Electron ◽  
Field Mobility ◽  
And Diffusion
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