Comparison on mechanical properties of heavily phosphorus- and arsenic-doped Czochralski silicon wafers

Yuan, Kang; Sun, Yang; Lu, Yunhao; Liang, Xianwen; Tian, Dong; Ma, Xiangyang; Yang, Deren

doi:10.1063/1.5025516

Cited by 7 publications

(4 citation statements)

References 23 publications

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“…It has been experimentally established that the hardness of silicon wafers (according to Vickers) increases by 1.2 times after strong phosphorus doping [45]. This result is consistent with our average 4.2% increase in the binding energy of lithium with the substrate after the phosphorus-doping of silicene.…”

Section: Discussionsupporting

confidence: 91%

Computational Study of Lithium Intercalation in Silicene Channels on a Carbon Substrate after Nuclear Transmutation Doping

et al. 2019

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Silicene is considered to be the most promising anode material for lithium-ion batteries. In this work, we show that transmutation doping makes silicene substantially more suitable for use as an anode material. Pristine and modified bilayer silicene was simulated on a graphite substrate using the classical molecular dynamics method. The parameters of Morse potentials for alloying elements were determined using quantum mechanical calculations. The main advantage of modified silicene is its low deformability during lithium intercalation and its possibility of obtaining a significantly higher battery charge capacity. Horizontal and vertical profiles of the density of lithium as well as distributions of the most significant stresses in the walls of the channels were calculated both in undoped and doped systems with different gaps in silicene channels. The energies of lithium adsorption on silicene, including phosphorus-doped silicene, were determined. High values of the self-diffusion coefficient of lithium atoms in the silicene channels were obtained, which ensured a high cycling rate. The calculations showed that such doping increased the normal stress on the walls of the channel filled with lithium to 67% but did not provoke a loss of mechanical strength. In addition, doping achieved a greater battery capacity and higher charging/discharging rates.

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Section: Discussionsupporting

confidence: 91%

Computational Study of Lithium Intercalation in Silicene Channels on a Carbon Substrate after Nuclear Transmutation Doping

et al. 2019

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“…It has been reported in the literature that the maximum solid solubility of As (1.8×10 21 cm −3 ) is higher than that of P (1.3×10 21 cm −3 ) in silicon. Moreover, in the c-Si, the distribution coefficient of P (0.35) is comparatively higher than that of As (0.3), and the evaporation rate of P (1.4×10 −4 cm s −1 ) is smaller than that of As (8×10 −3 cm s −1 ) [24]. As a consequence, for a similar diffusion environment the sheet resistance of silicon with the P-diffusion is lower by a factor of five as compared to that obtained with the As-diffusion [23].…”

Section: Effect Of Dopants On Emitter Formationmentioning

confidence: 90%

“…The diffusion of n-type dopants at much higher concentrations compare to the background doping level of the base, turns the surface region into n-type Si resulting in a p-n junction. Group fifth elements such as phosphorous (P), arsenic (As), antimony (Sb), and bismuth (Bi) are used as pentavalent (ntype dopants) impurities in the silicon device industry [23][24][25][26][27]. The choice of proper impurity dopants is one of the important factors that govern the quality of the emitter.…”

Section: Effect Of Dopants On Emitter Formationmentioning

confidence: 99%

A comparative study of different emitter diffusion profiles on the performance of Si solar cells

Singh

Amir

2022

Eng. Res. Express

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We have investigated the effect of emitter design key parameters such as depth factor and the peak concentration for different types of emitter diffusion profiles (uniform, exponential, Gaussian, and Erfc) on the performance of silicon (Si) solar cells. The value of the depth factor is optimized as 0.1 µm for all these emitter diffusion profiles. Afterward, the peak concentration value is optimized for all the diffusion profiles. A close examination of relative diffusion lengths, conductivities, recombination rates, internal and external quantum efficiencies for these diffusion profiles revealed that among all the considered emitter diffusion profiles, the Erfc profile exhibits the maximum efficiency of 23.53% with an optimized peak concentration of 2×1020 cm-3 for emitter and 1×1019 cm-3 for the back surface filed doping. PC1D was used for all the simulations.

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“…(2 mol%) to Z8 (8 mol%), and then decreases slightly for Z10 (10 mol%), which was apparently due to the decrease in packing density [35,36]. It means there was breaking of some P-O-Zn bonds per volume in the glass network during the application of load, which led to a decrease in the resistance of deformation.…”

Section: Vickers Hardness and Fracture Toughnessmentioning

confidence: 99%

Investigations on Physico-Mechanical and Spectral Studies of Zn2+ Doped P2O5-Based Bioglass System

et al. 2020

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ZnO incorporated phosphate based bioglasses with the composition xZnO–22Na2O–24CaO–(54-X)P2O5 (where X = 2, 4, 6, 8, 10 mol%) were developed by melt-quenching process. The physical, thermal and other structural properties of the glasses were studied in detail. By employing various characterization techniques such as X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) in addition to the energy dispersion spectroscopy (EDS), and Raman spectroscopy, the structural properties were analyzed. Interestingly, physical, thermal and mechanical properties were enhanced with the increasing content of zinc oxide up to 8 mol%, due to the presence of more ionic nature of P–O–Zn bonds than P–O–P bonds in the glass network. The FTIR and Raman analysis revealed the evolution of the phosphate network with increasing zinc concentration and leads to progressive depolymerisation of the glass network. The obtained results from the physical and structural properties of these zinc added calcium phosphate glasses support their potential to use as bone implant applications.

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Comparison on mechanical properties of heavily phosphorus- and arsenic-doped Czochralski silicon wafers

Cited by 7 publications

References 23 publications

Computational Study of Lithium Intercalation in Silicene Channels on a Carbon Substrate after Nuclear Transmutation Doping

Computational Study of Lithium Intercalation in Silicene Channels on a Carbon Substrate after Nuclear Transmutation Doping

A comparative study of different emitter diffusion profiles on the performance of Si solar cells

Investigations on Physico-Mechanical and Spectral Studies of Zn2+ Doped P2O5-Based Bioglass System

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