MoO3 metal oxide nanostructure was formed by hydrothermal synthesis, and a perovskite solar cell with an MoO3 hole transfer layer was fabricated and evaluated. The characteristics of the MoO3 thin film were analyzed according to the change of hydrothermal synthesis temperature in the range of 100 ℃ to 200 ℃ and mass ratio of AMT : nitric acid of 1 : 3 ~ 15 wt%. The influence on the photoelectric conversion efficiency of the solar cell was evaluated. Nanorod-shaped MoO3 thin films were formed in the temperature range of 150 ℃ to 200 ℃, and the chemical bonding and crystal structure of the thin films were analyzed. As the amount of nitric acid added increased, the thickness of the thin film decreased. As the thickness of the hole transfer layer decreased, the photoelectric conversion efficiency of the perovskite solar cell improved. The maximum photoelectric conversion efficiency of the perovskite solar cell having an MoO3 thin film was 4.69 % when the conditions of hydrothermal synthesis were 150 ℃ and mass ratio of AMT : nitric acid of 1 : 12 wt%.

Abstract
1. 서 론
2. 실험방법
3. 결과 및 고찰
    3.1 수열합성법으로 제막한 MoO3 금속산화물 박막특성
    3.2 수열합성법으로 제막한 MoO3 정공수송층을 갖는 페로브스카이트 태양전지 전기적 특성
4. 결 론
References

• 송재관(전남대학교 공과대학 신화학소재공학과) | Jae-Kwan Song (Department of Advanced Chemicals & Engineering, Chonnam National University)
• 안준섭(전남대학교 공과대학 신화학소재공학과) | Joon-Sub Ahn (Department of Advanced Chemicals & Engineering, Chonnam National University)
• 한은미(전남대학교 공과대학 화학공학부) | Eun-Mi Han (School of Chemical Engineering, Chonnam National University) Corresponding author