简介：UnipolarresistiveswitchingbehaviorsoftheZnOandAl2O3/ZnOfilmsfabricatedonflexiblesubstratesbypulselaserdepositionwerestudiedinthispaper.Thefilmsweredepositedatroomtemperaturewithoutpost-annealingtreatmentduringtheprocess.XraydiffractionresultsindicatedthatZnOfilmhasadominantpeakat(002).ScanningelectronmicroscopyobservationshowedacolumnargrainstructureoftheZnOfilmtothesubstrate.ThebilayerdeviceofAl2O3/ZnOfilmshadstableresistiveswitchingbehaviorswithagoodenduranceperformanceofmorethan200cycles,highresistiveswitchingratioofover103atareadvoltageof0.1V,whichisbetterthanthatofthesingleoxidelayerdeviceofZnOfilm.Apossibleresistiveswitchingfilamentarymodewasdemonstratedinthispaper.TheconductionmechanismsofhighandlowresistancestatescanbeexplainedbyspacechargelimitedconductionandOhmic’sbehaviors.Theenduranceofthebilayer(BL)devicewasnotdegradeduponbendingcycles,whichindicatesthepotentialoftheflexibleresistiveswitchingrandomaccessmemoryapplications.

简介：镓氮化物的大数量(轧)nanowires经由Ga2O3电影在一个石英试管在950点在氧化的铝层上扔了的ammoniating被准备了。当水晶的wurtzite由X光检查衍射，X光检查光电子spectrometry扫描电子显微镜和精选区域的电子衍射轧了，nanowires被证实了。传播电子显微镜(TEM)和扫描电子显微镜学(SEM)表明nanowires非结晶、不规则，与从30nm到直到十微米的80nm和长度的直径。精选区域的电子衍射显示有六角形的wurtzite结构的nanowire是单身者水晶。生长机制简短被讨论。

简介：Organicmultiplequantumwells(OMQWs)consistingofalternatinglayersoforganicmaterialshavebeenfabricatedfromtris(8-hdroxyquinoline)aluminum(Alq)and2-(4-biphenylyl)-5-(4-tertbutylphenyl)-1,3,3-oxadiazole(PBD)byamultisource-typehigh-vacuumorganicmoleculardeposition.Fromthesmall-angleX-raydiffractionpatternsofAlq/PBDOMQWs,aperiodicallylayeredstructureisconfirmedthroughtheentirestack.TheAlqlayerthicknessintheOMQWswasvariedfrom1nmto4nm.Fromtheopticalaborption,photoluminescenceandelectroluminescencemeasurements,itisfoundthattheexcitonenergyshiftstohigherenergywithdecreasingAlqlayerthickness,ThechangesoftheexcitonenergycouldbeinterpretedastheconfinementeffectsofexcitonintheAlqthinlayers.Narrowingoftheemissionspectrumhasalsobeenobservedfortheelectroluminescentdevices(ELDs)withtheOMQWsstructureatroomtemperature.

简介：我们认识到NiCo2由激光照耀的O4nanomaterialsNiCo2有不同集中的O4暂停。结果表明同样准备的样品是有568nm和优异dispersity的最大的平均尺寸的需要的范围，它在0.30JDS的精力密度被获得)。Obwohl死ErkrankungenvieleGemeinsamkeitenaufweisen(Fiebersch浭湥慦獳湵?浉畭歮浯牰浯瑩楴牥湵?楢杲?浩敭?楥?牥???獥删獩歩????釧????????闧?郦????駥?釧?闦??駥?跧???闦?臧?臧????駥膹?郦?飧?蓦???釧?釧?蓦???跧?觧??跧?????觧?釧??闦??闦?觧?郧?闦???跧???釧????触?跧??趥觧?鷦？？

简介：WereportthedepositionofNb2O5filmsonunheatedBK-7glasssubstratesusingremoteplasmasputteringsystem.Theremoteplasmageometryallowspseudoseparationofplasmaandtargetbiasparameters,whichofferscompletedepositionratecontrol.Usingappropriateoxygenflowrates,high-densityandlow-lossNb2O5filmsaredepositedwithratesupto0.49nm/s.Lowerdepositionrates(~0.026nm/s)canalsobeobtainedbyworkingatlowtargetcurrentandvoltageandatlowpressure.Nb2O5filmsdepositedatdifferentrateshavetherefractiveindexofabout2.3andtheextinctioncoefficientaslowas6.9×10-5.

简介：Thenear-ultraviolet(n-UV)excitedblue-emittingSr2MgSi2O7:Eu2+phosphorsareusedforfluorescencelampandtricolorwhiteLEDs.Theeffectofnitrogen-dopedonthestructureofthehostandtheenhancementofphotoluminescenceisexperimentallyinvestigated.Theresultsshowthatastheamountofnitrogen-dopedvariesfrom0to0.6(at.),theluminousintensityisfoundtobeincreasedto169%,andthepartialreplacementofObyNresultsinachangeofthecrystalfieldbymodifyingthesymmetryofthecrystalstructure.Asaresult,withthenitrogen-dopedinsmallamount,theluminousintensity,chromaticitycoordinatesandthecolorpuritycanbeadjustedtoadesiredvalueintheapplications.

简介：Cu2ZnSnS4(CZTS)粉末被使用ZnS和Cu2没有任何中介，原料直接在450愠?浥瑰?瑳浯d分阶段执行的SnS3

简介：Chalcopyrite-typeCuInSe2nanoparticlesaresuccessfullypreparedbyusingIn2Se3nanoparticlesasaprecursorreactedwithcopperchloride(CuCl)solutionviaaphasetransformationprocessinlowtemperature.Thereactiontimeisakeyparameter.Afterthereactiontimeincreasingfrom0.5hto8h,In2Se3andCuClreactwitheachothergraduallyviaphasetransformationintoCuInSe2withoutanyintermediatephase.ThecrystallinestructureandmorphologyoftheCuInSe2nanoparticlesarecharacterizedbyX-raydiffraction(XRD)andfieldemissionscanningelectronmicroscopy(FESEM).ThediameterofCuInSe2nanoparticleswithgooddispersibilityrangesfrom10nmto20nm.ThebandgapoftheCuInSe2nanoparticlesis1.04eVcalculatedfromtheultraviolet-visible(UV-VIS)spectrum.

简介：Inthispaper,wedemonstratetheacetylehe(C2H2)sensorwithhighsensitivityusingahollow-corephotonicbandgapfiber(HC-PCF).ExperimentsformeasuringC2H2concentrationsingasmixtureareperformed.Usinga2m-longHC-PCFasgascell,thespectrumofacetyleneatn1+n3bandhasbeenmeasured,andtheP11-branchhasbeenselectedforthepurposeofsensing.Aminimumdetectivityof143partspermillionbyvolume(ppmv)forthesystemconfigurationisestimated.

简介：Inthiswork,Bi2Te3films(250nm)arefabricatedonSiO2/Sisubstratesbyradiofrequency(RF)magnetronsputteringatroomtemperature,andthepreparedfilmsareannealedoverthetemperaturerangeof200°Cto400°C.Crystallinityandelectricalpropertiesofthefilmscanbetunedcorrespondingly.ThepowerfactorsofBi2Te3filmsof0.85μW/K2cmto11.43μW/K2cmwereachievedafterannealing.Theinfraredreflectancemeasurementsfrom2.5μmto5.0μmdemonstratethatthereisalsoaslightred-shiftoftheplasmaoscillationfrequencyintheBi2Te3films.Bymeansofplasmoniccalculations,weattributethered-shiftofabsorptionpeakstothereductionofcarrierconcentrationandthechangeofeffectivemassofBi2Te3filmswiththeincreasedannealingtemperature.

简介：srzn2（PO4）2：在大气中的高温固相反应合成Sm3＋荧光粉。srzn2（PO4）2：Sm3＋荧光粉是通过紫外光有效激发（UV）和蓝色光，和发射峰被分配到2-6h54G5//2过渡（563nm），2-6h74G5//2（597nm和605nm）和2-6h94G5//2（644nm和653nm）。对srzn2发射强度（PO4）2：Sm3＋的Sm3＋浓度的影响，其浓度猝灭效应srzn2（PO4）2：钐也观察到。当掺杂离子（=Li，Na和K）离子的发光强度，srzn2（PO4）2：Sm3＋可以明显增强。在国际照明委员会（CIE）的srzn2色坐标（PO4）2：Sm3＋定位在橙红色的区域。结果表明，该荧光粉具有潜在的应用在白光发光二极管（LED）。

简介：0．概述近年来，中国的移动通信市场己开始从快速增长阶段进入到成熟阶段，随着3G的临近，新的运营商将会参与移动通信市场的竞争。面对日益激烈的竞争形势，中国移动作为国内移动通信市场占主导地位的运营商，如何处理现有GSM系统与3G之间的关系、制定合理的3G发展策略，以及顺利完成2G向3G过渡等，已成为面临的关键问题。

简介：在ZnO的性质上评估ZnO缓冲区层和艾尔比例的影响：艾尔(偶氮)/ZnO双性人层电影，一系列AZO/ZnO电影被电子横梁蒸发在石英底层上扔。X光检查衍射测量证明这些电影的水晶质量随电影厚度的增加被改进。这些电影的电的性质被调查。搬运人集中和霍尔活动性两个都随缓冲区层厚度的增加增加。然而，抵抗力到达在大约50nm厚的缓冲区层最低。最低抵抗力和最大的霍尔活动性两个都在1wt%艾尔集中被获得。但是所有这些电影的光发射度不管有比在可见区域的5wt%低的艾尔集中的缓冲区层厚度比80%大。

简介：:Twonovelpoly[(3-alkyhhiophene-2,5-diyl)-(benzylidenequinomethane-2,5-diyl)s]derivatives,poly[(3-butylthiophene-2,5-diyl)-(p-N,N-dimethylamino)benzylidenequinomethane-2,5-diyl)](PBTDMABQ)andpoly[-(3-octylthiophene2,5-diyl)-(p-N,N-dimethylamino)benzylidenequinomethane-2,5-diyl)](POTDMABQ),weresynthesized.Thebandgapsofthetwopolymersarecalculatedas1.75eVforPBTDMABQand1.69eVforPOTDMABQ,respectively.Thehomogenousfilmsofthetwopolymerswerepreparedandtheirthird-ordernonlinearopticalpropertieswerestudiedbythebackwarddegeneratefour-wavemixingat532nm.Byusingtherelativemeasurementtechnique,thethird-ordernonlinearopticalsusceptibilitiesofPBTDMABQandPOTDMABQarecalculatedas5.62×10^-9and1.22×10^-8ESU,respectively.Itisfoundthatsubstitutedalkygroupshavestrongeffectsonthebandgapandnonlinearopticalpropertiesofthetwopolymers.Therelativelybigthird-ordernonlinearopticalsusceptibilitiesandsmallbandgapofPOTDMABQresultedmainlyfromthelongeralkylwithstrongelectron-donatingabilitycanenhancethedelocationdegreeofconjugatedπelectronics.

简介：Basedonopticalfibertechnology,themainelectriccircuitoftheremoteI/Ounitcontrollerisstudied.Andtheapplicationofthesystemisillustrated.

简介：拉脱维亚的主要电信提供商Tele2SIA（瑞典Tele2AB的分公司）已经与西门子签订了合同，扩展其GSM网络并且建立完整的3G／W-CDMA网络基础设施。

简介：研究表明含氟气体的性质决定了原子氟（F）的转化效率,通常在CxFy气体中x的值越大,氟（F）的转化效率也就会越高。所以C3F8（八氟丙烷）比C2F6（乙氟烷）具有更高的利用效率,更少的PFC（全氟化物）的排放。文章主要研究在以四乙氧基硅烷（TOES）为基础的离子增强化学气相沉积（PlasmaEnhancedChemicalVaporDeposition,PECVD）的清洗制程中,利用分解效率高的C3F8气体取代C2F6气体。通过实验设计（DesignOfExperiment,DOE）,调整腔体压力、射频（RF）功率、气体流量等参数,最终得到最优化的新清洗配方。应用到实际的量产中,有效地降低了成本,减少了PFC的排放。

简介：Usinganewlow-temperatureprocess(＜600℃),thepoly-SiTFTwasfabricatedbymetal-inducedlateralcrystallization(MILC).Anultrathinaluminumlayerwasdepositedona-Sifilmandselectivelyformedbyphotolithography.Thefilmswerethenannealedat560℃toobtainlaterallycrystallizedpoly-Sifilm,whichisusedasthechannelareaofaTFT.Thepoly-SiTFTshowedanon/offcurrentratioofhigherthan1×106atadrainvoltageof5V.TheelectricalpropertiesaremuchbetterthanTFTfabricatedbyconventionalcrystallizationat600℃.

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简介：在购买MP3时你是否总是在照顾耳朵还是可怜钱包上犹豫不绝，你是否因为MP3的日久失色而开始喜新厌旧，你是否对MP3有一个心中完美的理想，相信很多人都信奉物美价廉的黄金准则，在选择MP3产品时如果外观能够吸引眼球，性能能够吸引大脑，价钱能够吸引钱包，恐怕很快就要将其据这己有了。现在我为你引存的这位MP3“佳丽”可要请你注意了，她在以上三个过程中都占具着一定的优势，她就是日前纽曼公司继纽曼家族A系列正式推出的U2系列MP3播放器。