The diffusion of chlorine in CdTe

Shaw, D.; Watson, E. Bruce

doi:10.1088/0022-3719/17/28/011

Cited by 39 publications

(20 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5a). However, only the data for chlorine diffusivity of [56,57] corresponded to the CEF and unexpectedly, far from CEF are proposed in [58] data for the bromine and iodine. The reason of that probably was shown in [71] where was obtained that the iodine diffusion caused heterogeneity of the CdTe, so forming a discontinuous phase of randomly distributed particles.…”

Section: Diffusion Of Halogens and Chalcogensmentioning

confidence: 93%

“…Thus, according to, [56][57][58][59] the profiles of halogens (Cl, Br, and I) comprise four parts that can be treated as the sum of four complementary error functions. Assuming that a change in the diffusivity mechanism is accompanied with the CEF correlation between pre-factors D 0 and DE a, all the Arrhenius' parameters were used for the graphical analysis (Fig.…”

Section: Diffusion Of Halogens and Chalcogensmentioning

confidence: 99%

See 1 more Smart Citation

Empirical Correlations Between the Arrhenius’ Parameters of Impurities’ Diffusion Coefficients in CdTe Crystals

Shcherbak

Kopach

Fochuk

et al. 2015

J. Phase Equilib. Diffus.

View full text Add to dashboard Cite

Understanding of self-and dopant-diffusion in semiconductor devices is essential to our being able to assure the formation of well-defined doped regions. In this paper, we compare obtained in the literature up to date the Arrhenius' parameters (D=D 0 exp(2DE a /kT)) of point-defect diffusion coefficients and the I-VII groups impurities in CdTe crystals and films. We found that in the diffusion process there was a linear dependence between the pre-exponential factor, D 0 , and the activation energy, DE a , of different species: This was evident in the self-diffusivity and isovalent impurity Hg diffusivity as well as for the dominant IIIA and IVA groups impurities and Chlorine, except for the fast diffusing elements (e.g., Cu and Ag), chalcogens O, S, and Se, halogens I and Br as well as the transit impurities Mn, Co, Fe. Reasons of the lack of correspondence of the data to compensative dependence are discussed.

show abstract

Section: Diffusion Of Halogens and Chalcogensmentioning

confidence: 93%

Section: Diffusion Of Halogens and Chalcogensmentioning

confidence: 99%

Empirical Correlations Between the Arrhenius’ Parameters of Impurities’ Diffusion Coefficients in CdTe Crystals

Shcherbak

Kopach

Fochuk

et al. 2015

J. Phase Equilib. Diffus.

View full text Add to dashboard Cite

show abstract

“…The literature also contains some variation in the HOMO/ LUMO levels. The HOMO levels were agreed to be between 5.1 and 5.2 eV, but the LUMO levels .varied between 2.7 -3.1 eV, resulting in band gap measurements varying from 2.1-2.4 eV [22][23][24][25][26].…”

Section: Meh-ppvmentioning

confidence: 95%

“…and the sample was exposed to CdCh during the annealing process. Vapors from CdCh are often used to slightly p-dope CdTe, and it was incorporated here for the same purpose [25]. The optimal annealing …”

Section: Cdse Quantum Dotsmentioning

confidence: 99%

Thin Film Solar Cells Using ZnO Nanowires, Organic Semiconductors and Quantum Dots

VanSant

2000

View full text Add to dashboard Cite

The abstract and thesis of Kaitlyn V anSant for the Master of Science in Physics were presented May 11, 2007, and accepted by the thesis committee and the department. A thin film organic/ inorganic hybrid solar cell was fabricated by incorporating ZnO nanowires, n-and p-type organic semiconductors and inorganic quantum dots.The basic cell design involved the electrodeposition of ZnO nanowires grown on a substrate coated with a transparent conductive oxide. The ZnO nanowires were coated with a thin layer of an organic n-type material, followed by a deposition of inorganic quantum dots. A p-type polymer layer was subsequently deposited and the sample was then contacted with gold to form a quantum dot layer sandwiched between a p-n junction of organic conductive materials.Various materials and processing methods were adjusted, using I-V characteristics, photovoltage and/ or photocurrent measurements to determine the performance of the cell. Each constituent material in the basic device design was evaluated in terms of its contribution to the sample characteristics. A variety of deposition techniques were investigated to obtain homogeneous layers. Different 2 annealing procedures were explored with· the intent of balancing the time and tem:peratures required for electrical activation with material constraints such · as tendency towards oxidat~on and low meltiJ?.g points. The effect of time on the sample characteristics was also observed. The evaluatiOn primarily includes data for samples that led to design modifications aimed at improving both electrical properties and quantum efficiencies.This research led to the development of a hybrid solar cell sensitized by the addition of quantum dots. The organic semiconductors were used to form a p-n junction, and the p-type polymer also served as an active absorber layer. The quantum dots were used as the inorganic absorber fayer, and the results show that the range of optical absorption in the cell can be modified by adjusting particle size. In addition, the ZnO nanowires appear to improve charge transfer, when used with materials that have favorable band offsets.

show abstract

“…Chlorine diffusion into CdTe has been studied by Shaw and Watson 6 and, more recently, Jones et al 7 In both cases complex profiles were reported, but recent advances in the sectioning technique have allowed a more elaborate analysis of the profiles to be reported in the latter publication, which could be fitted empirically by a function composed of the sum of four complementary error functions similar to the ones obtained for the diffusion of iodine into CdTe. 3 The projected room temperature diffusivity for the fastest part of the chlorine diffusion profiles (6 × 10 −25 cm 2 s −1 ) 7 was much lower than the corresponding one for iodine.…”

Section: Introductionmentioning

confidence: 98%