The Optical and Chemical Response of Thermal Neutron-Irradiated CR-39 Polymeric Track Detector after Annealing

Neerja,; Kalia, Sameer; Kaur, Jaskiran; Kumar, Sanjeev; Singh, Surinder

doi:10.1080/03602559.2013.845216

Cited by 2 publications

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Mobility modulation in low carrier concentration organic semiconducting thin films by varying disorder parameters

Kalia

Mahajan

Ghansyam

et al. 2017

Journal of Applied Physics

View full text Add to dashboard Cite

In the present work, an attempt has been made to modulate the carrier mobility in thermally evaporated, low carrier concentration organic thin films, with boron sub phthalocyanine chloride (sub pc) as a case study, by changing its various disorder parameters namely energetic disorder (σ), positional disorder (Σ2, Γ), and average inter-site hopping distance (a). The change in these disorder parameters was achieved by varying the substrate temperature of the films. All the films were electrically characterized under different temperature and bias conditions. An improvement of more than two orders in the mobility was achieved in the films with lower energetic and positional disorder. The transport mechanism exhibited a cross over from low frequency dispersion (high loss) regime to low loss regime with a decrease in disorder parameters. The average inter site hopping distance emerged as a key factor contributing to mobility enhancement. The zero field mobilities and other parameters were analyzed using Gaussian Disorder Model, Correlated Gaussian Disorder Model, and Murgatroyed equation. Variation in energetic disorder extracted from the analytical model was compared with the width of absorption tail obtained from UV-Vis spectra of the films.

show abstract

Mobility modulation in low carrier concentration organic semiconducting thin films by varying disorder parameters

Kalia

Mahajan

Ghansyam

et al. 2017

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

Effect of gamma irradiation doses on the spectroscopic, optical dispersion, and structural properties of Cr-39 nuclear track detector

Elashmawi

Abdelghany

2023

Preprint

View full text Add to dashboard Cite

The effect of gamma-ray irradiation doses (4, 6, 8, and 10 Mrad) on the structural and optical properties of the Cr-39 solid-sate nuclear track detector was studied before and after irradiation. The main characteristic amorphous X-ray peaks were observed with very slight changes in their intensity, confirming the structural stability of the Cr-39 solid-state nuclear track detector. The optical transmittance and absorbance of the irradiated sample were lower than those of the unirradiated sample in the UV region. The optical transmittance increased rapidly in the ultraviolet range (337–546 nm) until it reached an almost constant value in the visible range. Moreover, a red shift in cutoff wavelength (λcutoff) was seen after irradiation, indicating that the fundamental absorption edge of the examined samples has decreased. Changes occurred in the optical band-gap values of all samples, with new groups of localized states generated near the valence and conduction band edges. The refractive index (n) values were observed to be increases after irradiation. The extinction coefficient increases with increasing wavelength as irradiated doses increase which was caused by surface plasmon absorption in irradiated samples.

show abstract

The Optical and Chemical Response of Thermal Neutron-Irradiated CR-39 Polymeric Track Detector after Annealing

Cited by 2 publications

References 31 publications

Mobility modulation in low carrier concentration organic semiconducting thin films by varying disorder parameters

Mobility modulation in low carrier concentration organic semiconducting thin films by varying disorder parameters

Effect of gamma irradiation doses on the spectroscopic, optical dispersion, and structural properties of Cr-39 nuclear track detector

Contact Info

Product

Resources

About