Efficient perovskite solar cells from acetylacetone modified TiO2 nanoparticles

Seok Yeong Hong; Hyong Joon Lee; Jin Kyoung Park; Min Jeong Ki; Jin Hyuck Heo; Sang Hyuk Im

doi:10.1117/12.2643853

26 September 2022 Efficient perovskite solar cells from acetylacetone modified TiO₂ nanoparticles

Seok Yeong Hong, Hyong Joon Lee, Jin Kyoung Park, Min Jeong Ki, Jin Hyuck Heo, Sang Hyuk Im

Proceedings Volume 12209, Organic, Hybrid, and Perovskite Photovoltaics XXIII; 1220907 (2022) https://doi.org/10.1117/12.2643853
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States

Conference Poster

Abstract

In this study, efficient perovskite solar cells are prepared by using acetylacetone modified TiO2 nanoparticles (Acac-TiO2) as electron transporting layer (ETL). Acetylacetone suppresses Ti-OH surface defects by donating lone pair electrons and simultaneously drives conduction band of Acac-TiO2 and enhance energy band alignment with respect to perovskite. Accordingly, Acac-TiO2 based solar cell exhibits a high 21.20% PCE due to enhanced charge extraction and reduced defect density. Additionally, by adopting low temperature processed Acac-TiO2, we demonstrate flexible PSCs with 18.01% PCE and excellent mechanical stability, retaining 74.5% and 67.1% PCE after 5,000 bending cycles in outward and inward direction.

Citation Download Citation

Seok Yeong Hong, Hyong Joon Lee, Jin Kyoung Park, Min Jeong Ki, Jin Hyuck Heo, and Sang Hyuk Im "Efficient perovskite solar cells from acetylacetone modified TiO₂ nanoparticles", Proc. SPIE 12209, Organic, Hybrid, and Perovskite Photovoltaics XXIII, 1220907 (26 September 2022); https://doi.org/10.1117/12.2643853

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available