콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Photoelectrochemical Cell Study on Closely Arranged Vertical Nanorod Bundles of CdSe and Zn doped CdSe Films
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2010
- 저자명 박정호
- 학술지명 BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- 발행처명 KOREAN CHEMICAL SOC
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 11
논문 초록 (Abstract)
Closely arranged CdSe and Zn doped CdSe vertical nanorod bundles were grown directly on FTO coated glass by using electrodeposition method. Structural analysis by XRD showed the hexagonal phase without any precipitates related to Zn. FE-SEM image showed end capped vertic ally aligned nanorods arranged closely. From the UV-vis transmittance spectra, band gap energy was found to vary between 1.94 and 1.98 eV due to the incorporation of Zn. Solar cell parameters were obtained by assembling photoelectrochemical cells using CdSe and CdSe:Zn photoanodes, Pt cathode and polysulfide (1M Na2S + 1M S + 1M NaOH) electrolyte. The efficiency was found to increase from 0.16 to 0.22 upon Zn doping. Electrochemical impedance spectra (EIS) ind icate that the charge-transfer resistance on the FTO/CdSe/polysulfide interface was greater than on FTO/CdSe:Zn/polysulfide. Cyclic voltam metry results also indicate that the FTO/CdSe:Zn/polysulfide showed high er activity towards polysulfideredox reaction than that of FTO/CdSe/p olysulfide.
