Flexible ITO films with atomically flat surfaces for high performance flexible perovskite solar cells

Jae Ho Kim, Hae Jun Seok, Hyeong Jin Seo, Tae Yeon Seong, Jin Hyuck Heo, Sang Hyuk Lim, Kyung Jun Ahn, Han Ki Kim

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


We report high performance flexible Sn-doped In2O3 (ITO) films prepared by in-line type vertical plasma arc ion plating for high performance flexible perovskite solar cells. Even at room temperature deposition, the ion-plated ITO film showed a low sheet resistance of 15.75 Ohm per square, a high average optical transmittance of 85.88% and a small outer bending radius of 5 mm because energetic ITO ions accelerated to the substrate led to better crystallinity and adhesion than sputtered ITO films. In addition, the ion-plated ITO films showed atomically flat and smooth surfaces due to different growth mechanisms and the absence of resputtering effects during the ion plating process. Flexible perovskite solar cells fabricated on the ion-plated ITO electrodes showed a higher power conversion efficiency of 16.8% than the sputtered ITO-based perovskite solar cell, indicating the potential of ion plated ITO films as promising flexible and transparent electrodes for perovskite solar cells.

Original languageEnglish
Pages (from-to)20587-20598
Number of pages12
Issue number44
Publication statusPublished - 2018 Nov 28

Bibliographical note

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012200) and Korea Electric Power Corporation (KEPCO) Research Institute. This study also received partial support from a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2018R1A2B2003826).

Publisher Copyright:
© 2018 The Royal Society of Chemistry.

ASJC Scopus subject areas

  • General Materials Science


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