In this study, we demonstrate the photoelectrochromic devices composed of TiO2 and WO3 nanostructuresprepared by anodization method. The morphology and the crystal structure of anodized TiO2 nanotubes and WO3 nan-oporous layers are investigated by SEM and XRD. To fabricate a transparent photoelectrode on FTO substrate, a TiO2nanotube membrane, which has been detached from Ti substrate, is transferred to FTO substrate and annealed at 450°Cfor 1 hr. The photoelectrode of TiO2 nanotube and the counter electrode of WO3 nanoporous layer are assembled andthe inner space is filled with a liquid electrolyte containing 0.5 M LiI and 5 mM I2 as a redox mediator. The propertiesof the photoelectrochromic devices is investigated and Pt-WO3 electrode system shows better electrochromic perform-ance compared toWO3 electrode.

1. 서 론
 2. 실험방법
  2.1. 양극산화에 의한 TiO2 및 WO3 나노구조체 제조
  2.2. TiO2 나노튜브로 구성된 광전극 제조
  2.3. 광전기변색 소자의 제작
  2.4. SEM, XRD 및 전기변색 특성 평가
 3. 결과 및 고찰
 4. 결 론
 감사의 글
 References

• 이상훈(한국기술교육대학교 에너지신소재화학공학부) | Sanghoon Lee
• 차형철(한국기술교육대학교 에너지신소재화학공학부) | Hyeongcheol Cha
• 나윤채(한국기술교육대학교 에너지신소재화학공학부) Corresponding Author