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中频溅射制备ZnO薄膜可改善射频磁控溅射方式中沉积速率过慢的缺点.对于多层薄膜的制备,对向靶的设计可使样品避开等离子体直接轰击,减少基底薄膜的损伤.本文采用这项技术制备厚度约为50nm的ZnO薄膜,通过调整工作压强、溅射功率、氧氩比等工艺条件,制备出均匀致密,结晶质量高,电阻率在102~103Ω·cm之间,可见光区透过率达到90;的ZnO薄膜.将其应用到CIGS太阳电池中发现,具有50nm厚度的ZnO层的CIGS太阳电池的性能较无ZnO层的太阳电池都有了很大提高. 相似文献
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Dynamic scaling and optical properties of Zn(S,O, OH) thin film grown by chemical bath deposition
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The scaling behavior and optical properties of Zn(S, O and OH) thin films deposited on soda-lime glass substrates by chemical bath deposition method were studied by combined roughness measurements, scanning electron microscopy and optical properties measurement. From the scaling behaviour, the value of growth scaling exponent β , 0.38±0.06, was determined. This value indicated that the Zn(S, O, OH) film growth in the heterogeneous process was influenced by the surface diffusion and shadowing effect. Results of the optical properties measurements disclosed that the transmittance of the film was in the region of 70%-88% and the optical properties of the film grown for 40 min were better than those grown under other conditions. The energy band gap of the film deposited with 40 min was around 3.63 eV. 相似文献
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对比分析了R452B、R32和R410A应用于空调(热泵)机组理论循环特性,并对R452B在空调(热泵)机组中直接替代R410A的性能进行了试验研究,测试了空调(热泵)机组在不同工况条件下的制冷/热量、功率、性能系数以及压缩机的排气温度等参数。结果表明:相较于使用R410A而言,机组使用R452B的制冷/热能力、功率略有下降,制冷能效提高在5%以内,压缩机的排气温度提高约1℃,压比有所降低。当R452B的充注量达到R410A的85%时,机组性能达到最佳。总体来讲,R452B与R410A的运行性能相近。R452B比R410A具有更低的GWP值,符合行业的制冷剂替代趋势,可以在空调(热泵)机组中作为R410A的直接替代制冷剂。 相似文献
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CuInSe2 Films Prepared by a Plasma-Assisted Selenization Process in Different Working Pressures
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The effects of working pressure on the composition, structure and surface morphology properties of CuInSe2 (CIS) films selenized with a plasma-assisted selenization process is investigated. Higher selenium content, better crystalline quality and much more regular surface particles compared to the others are found in the CIS film with 40 Pa working pressure. A Cu(In,Ga)Se2 device fabricated with the optimized plasma-assisted selenization process is demonstrated to be better than our previous result. After discussion, the reason for these phenomena is attributed to the compromise of electron temperature and plasma density. 相似文献
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<正>A novel closed-form expression for average capacity is derived for free-space optical(FSO) links over Gamma-Gamma turbulence channels by considering the effect of misalignment(pointing errors).The simulation results show that the average capacity of the FSO links can be analyzed with the effects of atmospheric turbulence condition,beam width,detector size,jitter variable,and transmitted optical power. Meanwhile,the results are further provided to verify the accuracy of our mathematical analysis.This work is useful for the FSO designer. 相似文献
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研究了110~180 ℃(2 min)下的快速热退火对Cu(In,Ga)Se2(CIGS)薄膜特性及CIGS太阳电池性能的影响.结果表明:对于不同成分比例的CIGS(正常、富Cu、高Ga)电池来说,150 ℃,2 min的快速退火最利于电池性能及二极管特性的增加.其中,退火对富Cu电池的开路电压Voc改善最大,这是因为快速热退火对消除部分CIGS薄膜中的CuSex有积极作用,从薄膜的电阻率有少量提高,器件的短路电流Jsc有少量下降可以得到验证;而对于高Ga电池来说,填充因子FF的改善最大,这是因为高Ga样品的缺陷较多,退火会消除薄膜内部的部分缺陷,从而薄膜的迁移率及Jsc都有所提高,使得FF有较大的增加. 相似文献
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以H2S气体作为硫源、固态蒸发硒蒸气作为硒源对电沉积Cu-In-Ga金属预制层进行硒硫化处理. 通过电沉积Cu-In-Ga金属预制层在不同衬底温度下硒化、硫化和硒硫化的对比实验,发现CuInS2相和CuIn(S,Se)2相优先生成,抑制了CuInSe2相的生成,促使InSe相薄膜向内部扩散,减弱了薄膜两相分离现象. 采用先硒化后硒硫化处理工艺优化了Cu(In,Ga)(S,Se)2薄膜的制备工艺,在250 ℃预硒化得到了开路电压为570 mV的太阳电池,在更高的预硒化温度得到了较大短路电流的太阳电池,最终优化得到了效率达到10.4%的电池器件.
关键词:
电化学沉积
Cu-In-Ga金属预制层
硒硫化处理
2薄膜')" href="#">Cu(In,Ga)(S,Se)2薄膜 相似文献