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《溫度對(duì)Ga摻雜ZnS納米結(jié)構(gòu)的形貌及光致發(fā)光性能的影響-論文.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫。
1、第43卷第1期人工晶體學(xué)報(bào)Vo1.43No.12014年1月JOURNALOFSYNTHETICCRYSTALSJanuary,2014日皿度對(duì)Ga摻雜ZnS納米結(jié)構(gòu)的形貌及光致發(fā)光性能的影響王坤鵬,,章海霞,翟光關(guān),姜武,翟化松,許并社(1.太原理工大學(xué)新材料界面科學(xué)與工程教育部重點(diǎn)實(shí)驗(yàn)室,太原030024;2.山西省新材料工程技術(shù)研究中心,太原030024;3.太原理工大學(xué)材料科學(xué)與工程學(xué)院,太原030024)摘要:分別以zn粉和s粉為原材料,Ga為摻雜劑,Au納米顆粒為催化劑,采用低溫化學(xué)氣相沉積法(CVD),在si(100)襯底上制備了G
2、a摻雜的ZnS納米結(jié)構(gòu)。利用x射線衍射儀(XRD)、能量彌散X-ray譜(EDS)、場(chǎng)發(fā)射掃描電子顯微鏡(SEM)和光致發(fā)光光譜(PL)等測(cè)試手段對(duì)樣品的結(jié)構(gòu)、成分、形貌和發(fā)光性能進(jìn)行了分析。結(jié)果表明:隨著溫度的升高(450—550oC),Ga摻雜ZnS納米結(jié)構(gòu)的形貌發(fā)生了從蠕蟲狀納米線到光滑納米線再到納米棒的演變,所制備的Ga摻雜的ZnS納米結(jié)構(gòu)均為六方纖鋅礦結(jié)構(gòu),分別在波長(zhǎng)為336rim和675nm處存在一個(gè)較強(qiáng)的近帶邊紫外發(fā)射峰和一個(gè)Ga摻雜引起的微弱紅光峰,而其它發(fā)光峰均是缺陷引起的。此外,本文還對(duì)Ga摻雜ZnS納米結(jié)構(gòu)的形成過程進(jìn)行了探
3、討,并提出了可能的形成機(jī)理。關(guān)鍵詞:ZnS納米結(jié)構(gòu);Ga摻雜;光致發(fā)光;化學(xué)氣相沉積法;生長(zhǎng)機(jī)理中圖分類號(hào):O614文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1000-985X(2014)01-0031-07EfectsofTemperatureonMorphologyandPhotoluminescentPropertiesofGa-dopedZnSNanostructuresWANGKun-peng·’,ZHANGHai.xia,,ZHAIGuang—mei,,JIANGWu,ZHAIHua.song。,XUBing—she’(1.KeyLaboratoryo
4、fInterfaceScienceandEngineeringinAdvancedMaterials,MinistryofEducation,TaiyuanUniversityofTechnology,Taiyuan030024,China;2.ShanxiResearchCentreofAdvancedMaterialsScienceandTechnology,Taiyuan030024,China;3.CollegeofMaterialsScienceandTechnology,TaiyuanUniversityofTechnology,Ta
5、iyuan030024,China)(Received8September2013,accepted6October2013)Abstract:Ga—dopedZnSflanostructureswerepreparedonSi(100)substratebylow-temperaturechemicalvapordeposition(CVD),usingSpowderandZnpowderasrawmaterial,GaasdopantandAunanoparticlesascatalyst.Thestructure,composition,m
6、orphologyandluminescentpropertiesofZnSsampleswereanalyzedbyX-raydiffraction(XRD),energydispersiveX—rayspectroscopy(EDS),fieldemissionscanningelectronmicroscopy(SEM)andphotoluminescence(PL)spectroscopy,respectively.Theresultsindicatethatwiththeincreaseofthetemperature,themorph
7、ologiesofGa—dopedZnSevolvedfromwolTn—likenanowirestosmoothnanowiresandthentonanorods.Allsampleswerehexagonalwurtzite,andshowedalargernear-band—edgeUVemissionpeakof336nmandaweakredlightemissionpeakof675nm,whileallotheremissionpeakswerecausedbydefectsofGadoping.Furthermore,the收
8、稿日期:2013-09-08;修訂日期:2013—10-06基金項(xiàng)目:國(guó)家自然科學(xué)基金(51002102);山西省科技創(chuàng)新重點(diǎn)團(tuán)隊(duì)項(xiàng)目(