SnS2/SnS薄膜太阳能电池的制备与性能研究

文章采用水热法合成SnS2、SnS纳米晶体,用浸涂法制备了相应薄膜及其太阳能电池.用XRD和TEM分析了纳米晶体的晶型和颗粒形貌,用SEM对SnS2薄膜进行了表征,测量了SnS2、SnS薄膜的UV-Vis、UV-Vis-NIR吸收性能.结果表明,所制备的SnS2、SnS颗粒分别呈球形和片状结构且结晶性良好,SnS2薄膜的直接带隙为2.6 eV、间接带隙为2.2 eV,SnS薄膜的直接带隙为1.2 eV,间接带隙为1.0 eV,得到的SnS2/SnS薄膜太阳能电池的短路电流密度为1.1 μA/cm2,开路电压为25 mV.     

SnS薄膜的制备技术及其性能的研究进展

SnS是一种Ⅳ-Ⅵ族半导体材料,非常适合于作为太阳能电池的吸收层材料。目前已经研究开发了许多制备SnS薄膜的技术,并对其性能进行了研究,详细阐述了SnS薄膜的制备技术及其性能的研究进展。     

DSSC用钒掺杂二氧化钛薄膜的制备及性能表征

为获得高性能电池用二氧化钛薄膜,采用射频磁控溅射法制备了掺V的TiO2薄膜.使用分光光度计、催化反应器和电化学工作站等研究了溅射时间、退火温度和掺钒量等对TiO2薄膜光学性能、光催化性能和超亲水性和电学性能的影响.研究表明溅射时间越长,薄膜紫外光区的透射率越低.3h条件下,在小于400nm区域内,溅射薄膜的透射率已经降至60%以下.退火温度对薄膜的亲水性能和光催化性能有一定的影响,经400℃退火的薄膜具有较好的光催化性能和超亲水性.掺V使薄膜的吸收峰红移和禁带宽度变窄,当掺杂量为0.5%时,TiO2薄膜红移量最大,禁带宽度变也为2.88eV.将制备的掺钒二氧化钛薄膜制备成染料敏化太阳能电池(DSSC),结果表明掺V量为0.5%的二氧化钛薄膜的光响应范围增大,所制备电池的开路电压和短路电流都高于未掺杂电池,其中短路电流从24.82μA增大到了88.15μA.表明电池的综合性能有所提高.     

退火温度对制备ZnO薄膜光电学性质的影响

采用溶胶—凝胶法在ITO玻璃衬底上制备氧化锌（ZnO）薄膜,利用AFM和UV对不同退火温度的ZnO薄膜样品进行分析。经实验的表征结果分析,退火温度为500℃～700℃区间,透射率呈现先上升后下降的趋势,而禁带宽度基本保持不变。通过实验结果对比得出,当退火温度为550℃时,制备出的ZnO薄膜的结晶质量较好,表面较光滑,透射率约为90%,禁带宽度为3.25eV,     

溶胶-凝胶法制备TiO_2薄膜及其光学特性

采用溶胶 -凝胶方法在二氧化硅玻璃基片上制备了TiO2 薄膜 ,通过测量薄膜在紫外 -可见光波段的透射率和反射率光谱 ,对其光学特性和吸收边缘进行了研究 .实验结果表明 ,吸收边缘大约在 35 0nm附近 ,并且随热处理温度的升高 ,吸收边缘向长波方向移动 ,锐钛矿相的禁带宽度比金红石相的禁带宽度高 0 .15eV     

溶胶—凝胶法制备TiO2薄膜及其光学特性

采用溶胶－凝胶方法在二氧化硅玻璃基片上制备了TiO2薄膜,通过测量薄膜在紫外－可见光波段的透射率和反射率光谱,对其光学特性和吸收边缘进行了研究。实验结果表明,吸收边缘大约在350nm附近,并且随热处理温度的升高,吸收边缘向长波方向移动,锐钛矿相的禁带宽度比金红石相的禁带宽度高0．15eV。     

科技期刊亮点

<正>单步电沉积法制备薄膜太阳电池吸收层材料CuInS2CuInS2是薄膜太阳电池光吸收层最有前途的材料之一,其禁带宽度为1.50eV,对可见光的吸收系数高达105cm-1数量级。以其作为太阳     

溶胶-凝胶法ZnO薄膜的制备及性能表征

采用溶胶-凝胶法在玻璃衬底上制备ZnO薄膜, X射线衍射(XRD)结果表明: 晶粒尺寸随退火温度的升高而增大, 与原子力显微镜(AFM)分析薄膜表面形貌的结果相符; UV\|Vis吸收谱线表明, 在ZnO带边吸收的位置出现较强的吸收, 并得到600 ℃退火处理的薄膜禁带宽度为3.23 eV; 室温光致发光谱表明, 所有薄膜均在386.5 nm处出现一个紫外发射峰, 当退火温度升高时, 深能级发射受到抑制.     

CZTS薄膜制备的研究进展

Cu2ZnSnS4(CZTS)具有与太阳光谱非常匹配的禁带宽度以及高的吸收系数,这使得CZTS薄膜成为一种最具潜力的新型太阳能电池薄膜吸收层材料。因此研究和完善CZTS薄膜的制备技术并提高薄膜质量及性能成为重要的研究课题。本文主要介绍四种CZTS薄膜的制备方法:磁控溅射、共蒸发、混合溅射、电子束蒸发硫化法。     

低温溅射AIN薄膜的光学分析

本文用光谱分析的方法研究低温反应射频溅射生长的A1N薄膜。结果表明,薄膜的红外吸收谱在700cm~(-1)处有一吸收带,与块状晶体相同,因此有较宽的红外透过区。热处理后红外谱无明显变化。薄膜的紫外吸收谱表明:禁带宽度为5.9～6.0eV,在N_2中热处理后,吸收过不发生平移,禁带宽度也不发生变化。在O_2中处理两小时后,禁带宽度减小到5.7eV。所有热处理都使非指数尾部变化。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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