Simulation of transient current through PMMA thin films based on a random walk model

Hacınlıyan, A.; Skarlatos, Yani; Yildirim, Haci Ahmet; Şahin, Gökhan

doi:10.1103/physrevb.73.134302

Cited by 6 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…17,18,21 The switching in electrical conductivity in BM1capped CdS QDs embedded in PMMA thin lms has been reported, 10 and transition from one conduction state to another was discussed. 39 Current oscillation reported in this article is possibly related to formation of charge density waves in the PMMA lms embedded with BM1-capped CdS QDs. 10 Instability in current versus time prole was recently reported 9 in silver nanoparticles dispersed in PMMA thin lms.…”

Section: Discussion Of Relevant Models For Current Oscillation In Semmentioning

confidence: 61%

“…The versatile polymer PMMA has been observed to manifest charge density waves. 39 Current oscillation reported in this article is possibly related to formation of charge density waves in the PMMA lms embedded with BM1-capped CdS QDs. Such nanocomposites are expected to be useful for various nanotechnology-based devices.…”

Section: Discussion Of Relevant Models For Current Oscillation In Sem...mentioning

confidence: 61%

See 1 more Smart Citation

Spectacular oscillations in the dark and photocurrent in thiol-capped CdS quantum dots embedded in PMMA matrix

2015

View full text Add to dashboard Cite

In this work, experimental results of low-frequency, time-dependent current oscillations (under both dark and photoexcitation) in the sample cells of thiol-capped CdS quantum dots (QDs) embedded in poly(methyl methacrylate) (PMMA) matrix have been presented. Dark and photocurrent oscillatory behaviours have been studied under diverse conditions, such as sample cell temperature, applied bias voltage across the electrodes and concentration of thiol-capped CdS QDs. Oscillation amplitude gradually increases with applied bias voltage at a particular temperature and also with increasing sample cell temperature. The period of oscillation (i.e., frequency) can be tuned over a wide range either by changing the sample temperature, applied bias voltage, or varying concentration of thiol-capped CdS QDs. Existing theories of current oscillations in semiconductors have failed to explain the observed low-frequency current oscillations in these semiconductors. Such current oscillations are possibly associated with the formation of some kind of charge density waves in the PMMA films embedded with thiol-capped CdS QDs.

show abstract