Transport properties and electronic structure of glasses in the arsenic-selenium system

Time-Resolved Optical Absorption and Mobility of Localized Charge Carriers ina-As2Orenstein1, Kastner2 1979Phys. Rev. Lett.61160View full textAdd to dashboardCite

“…Such a decrease in activation energy of ~ 0.1 eV has already been seen in drift mobility experiments with room-temperature transit times ~ 100 Msec. 5 A detailed study of the temperature dependence of \±{t) with use of our technique, particularly for 10 nsec<t D < 100 Msec, along with time-resolved measurements of the PA spectrum, is underway to test these ideas. This work was supported by National Science Foundation Grants No.…”

“…The advantage is that the analysis of EXAFS data is independent of crystal structure and is applicable to materials with no long-range order 0 In this Letter, we report the first direct evidence for bond-length contractions as a function of decreasing cluster size of Cu and Ni and extend measurements to sizes smaller than possible by other techniques, The preparation method and the substrate employed allow the study of the inherent characteristics of the metal particles in contrast to conventional small metal catelysts where interaction between the metal and substrate atoms may be significant. 5 Experiments were done at the Standord Synchrotron Radiation Laboratory (SSRL) on the storage ring SPEAR. The EXAFS spectra were recorded with use of fluorescence detection 6 to enhance the signal-to-background ratio.…”

Electric field dependent conductivity in amorphous semiconductors

“…Interesting to note that for tail conduction a nearly linear field dependence of the conductivity is observed using a plot of lg a versus F . Such a behaviour was found by several authors examining amorphous chalcogenides [a, 11,22,29,30]. The influence of the hopping distance is seen from Fig.…”

Modeling Dark Current Conduction Mechanisms and Mitigation Techniques in Vertically Stacked Amorphous Selenium-Based Photodetectors

“…Following the analysis of Pfister and Scher, the experimental results from disordered organic solids (molecularly doped polymers), − and chalcogenide glasses ( a -Se and As 2 Se 3 ) , have suggested their similarity in carrier transport in terms of hopping conduction via localized states (see Supporting Information S3 for further details). Hence, the charge transport in a -Se and As 2 Se 3 was simulated using the bulk DDOS distribution, the Poole–Frenkel mobility model (PFMOB), and the Langevin bimolecular recombination model in the Silvaco, Atlas simulator…”