ZnO：Sb納米粒子的制備與物性研究.pdf

1、東北師范大學(xué)碩士學(xué)位論文ZnO：Sb納米粒子的制備與物性研究姓名：喬麗平申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料物理與化學(xué)指導(dǎo)教師：徐長山20090501AbstractZnOasawidebandgapsemiconductormaterials，withwidebandgap(337eV)andalargeexcitonbindingenergy(60meV)，haveawiderangeofusesinthemanufactureoftran

2、sparentconductiveelectrodes，surfaceacousticwavedevices，sensorsflatpaneldisplaydevices，solarceilsandmanyotherfieldsZnOdopedwim3dtransitionmetalcations(egMn。Co，F(xiàn)e，etc)callgetmagneticsemiconductorsDietlpredictedthatdopedZnO

3、Cangetroomtemperatureferromagnetism，andexperimentfoundthat，ntypedilutedmagneticsemiconductormaterialsaremostlyparamagneticmaterials，andP—typedilutedmagneticsemiconductormaygetferromagnetismTheoreticallypredictedthatSbdop

4、edZnOcangainedptype，thereforepreparedSb—doped，MndopedandSb，MncodopedZnOnanomaterialsandstudyitsstructureandpropertiesiSveryimportentZnO：SbnanoparticlesweresynthesizedbytheS01gelmethodTheXRDandramanspectrashowedthatinZn0l

5、atticeZ一hasbeenreplacedbvSb”，withtheconcentrationincreasethenanoparticlesradiusbecomesmallerfromtemperaturedependentPLmeasurementspectrawedeterminethebindingenergyoftheaceeptorstobe131meVat81KsuggeststhatitisaSbzn2Vzncom

6、plexwithactivationenergyofaboutl60meVZnO：Mnnanoparticlesweresynthesizedbythesol—gelmethodTheXRDandramanspectrashowedthatMnhasbeendopedintoZnO，PLmeasurementspectrashowedthatLuminouspeaksintensitywerereducedafterdopedwithM

7、n，suggeststhatMnhaspassivationthelightemittingandwealSOobservedtheblueshinofemissionpeakSb，MncodopedZnOnanoparticlesweresynthesizedbythes01gelmethodTheXRDandramallspectrashowedthatMnandSbhasbeendopedintoZnOPLmeasurements

8、pectrashowedthatUVemissionpeakblue。shiftduetoconstraintsofsmallsizeenhancedquantum—sizee—ffectsRamanspectrashowedthatawideRamanscatteringpeakat530cm～Keywords：Zincoxide；temperaturedependentPLmeasurement；dilutedmagneticsem