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For the first time fabricated and investigated the photovoltaic characteristics of Au-Zn x Cd1–x S-Mofilm structural injection photo detectors sensitive to narrow the ultraviolet region of the electromagnetic spectrum, based on polycrystalline Zn x Cd1–x S layers. It was found by adjusting the flow of ZnS and CdS coming to the surface Mo substrate can control the shape of the spectral sensitivity of the Au-Zn x Cd1–x S-Mo-film structural injection photo detectors. The results will allow to optimize the structure of photo detectors and solar cells based on polycrystalline thin film solar cells. 相似文献
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A procedure for generating UV photocells in the spectral band Δλ = 350–520 nm with internal amplification is presented. It is revealed that such photocells are characterized by a spectral sensitivity of S λ ≈ 1.3 A/W at a spectral maximum (λmax = 461 nm) and by an integral sensitivity of S int ≈ (25–30) A/lm, which is higher by thousand times than similar parameters of common UV cells. It is shown that photocells based on Zn x Cd1 − x S solid solutions used as a part of a cascade photo converter make it possible to increase significantly the cascade photo converter efficiency with respect to the existing Si and CdTe photocells. 相似文献
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Increase of the photosensitivity of the pSi-n(Si2)1 ? x (ZnSe) x (0 ≤ x ≤ 0.01) structure exposed to gamma radiation with photon energy E ph ≥ 2.3 eV has been demonstrated. It is shown that irradiation with dose up to 104 rad raises and radiation with dose up to 105 rad reduces the forward current of the pSi-n(Si2)1 ? x (ZnSe) x structure. 相似文献
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A. S. Saidov Sh. N. Usmonov M. U. Kalanov Kh. M. Madaminov D. A. Nishanova 《Applied Solar Energy》2011,47(1):48-51
The results of studies of the structural feature and the effect of low-dose gamma irradiation (up to 105 rad) on the photoconductivity
relaxation and the spectral photosensitivity of pSi-nSi1 − x
Sn
x
(0 ≤ x ≤ 0.04) structures are described. It is shown that exposure to radiation leads to an increase in the relaxation time constant
from 55 to 83 μs and an enhancement in the sensitivity of the structures in the short-wavelength emission spectrum, which
is attributed to the radiation-stimulated gettering of crystal lattice defects localized in the near-boundaries regions between
Si1 −x
Sn
x
subcrystallites and Si1 − x
Sn
x
-Sn and Si1 − x
Sn
x
-SiO2 phases. 相似文献
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1 开发背景
当今社会,我们每天在追求舒适生活的同时,地球上环境的问题日趋严峻,我们不能顾此而失彼,必需把舒适性和环境保护结合起来。 相似文献
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The dependence between the composition of Al
x
Ga1 − x
P heterophotoconverters and the effective thickness of their base layers was established. An empirical formula to estimate
the effective thickness of a base layer as a function of the composition of solid-state solution (0 ≤ x ≤ 0.8) was proposed. 相似文献
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A chemimechanical (CM) pretreatment method was devised, wherein wood chips are acid-treated to weaken the physical structure then disc-refined to produce a fibrous substrate. CM pretreatment was directly compared with a common dilute acid (DA) pretreatment method, wherein wood is mechanically downsized to a powder or fiber substrate and then acid-treated. It was hypothesized that the CM pretreatment sequence would reduce the energy required for size reduction and increase enzymatic digestibility of the pretreated substrate. By treating wood chips in a dilute sulfuric acid liquor before the mechanical downsizing step, the net specific energy (NSE) of disc-refining was reduced by up to 95%. At the optimal acid treatment and disc-refining conditions determined within this work, CM pretreatment could produce a highly digestible lignocellulose substrate (95% cellulose conversion) while requiring less than 100 kWh/tonne od NSE for mechanical downsizing. A comparison of CM and DA pretreated hardwood revealed that CM pretreatment produced a significantly more digestible substrate than DA pretreatment. Differences in the digestibility of CM and DA pretreated substrates were attributed to differences in physical structure. CM pretreatment produced a substrate that consisted primarily of single fibers and small fiber bundles, while DA pretreatment produced larger fiber bundles. Furthermore, the CM pretreated substrate had a more accessible pore structure, and an altered distribution of surface lignin. 相似文献
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低碳经济是减缓和适应全球气侯变化,保障国民经济可持续发展的重要途径和理想蓝图。本文基于笔者及所在团队的研究和积累.就低碳经济的理想与期盼、煤为基础的现实与无奈、清洁发展的行动与瓶颈等具有初始决定性、战略影响性的问题进行系统的分析与解读,指出中国煤为基础与世界油气为主的能源结构截然不同、中国经济的高位增长与欧美经济的低速运行截然不同.强调化石能源的传统式低位利用积重难返、危机日重,清洁能源的商业化规模利用尚需时日、任重道远。 相似文献
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