Zirconium Oxide Doped Organosilica Nanodots as Light- and Charge-Management Cathode Interlayer for Highly Efficient and Stable Inverted Organic Solar Cells

Mengqi Cui; Qikun Rong; Rong Wang; Dechao Ye; Na Li; Li Nian

doi:10.1002/smll.202311339

Zirconium Oxide Doped Organosilica Nanodots as Light- and Charge-Management Cathode Interlayer for Highly Efficient and Stable Inverted Organic Solar Cells

Small. 2024 Mar 26:e2311339. doi: 10.1002/smll.202311339. Online ahead of print.

Authors

Mengqi Cui^{1

2}, Qikun Rong¹, Rong Wang³, Dechao Ye¹, Na Li⁴, Li Nian¹

Affiliations

¹ Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China.
² Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, SAR, 999077, China.
³ Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin, 537000, China.
⁴ School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, 510006, China.

PMID: 38529739
DOI: 10.1002/smll.202311339

Abstract

In this work, it is reported that zirconium oxide (ZrO₂) doped organosilica nanodots (OSiNDs: ZrO₂) with light- and charge-management properties serve as efficient cathode interlayers for high-efficiency inverted organic solar cells (i-OSCs). ZrO₂ doping effectively improves the light harvesting of the active layer, the physical contact between the active layer, as well as the electron collection property by habiting charge recombination loss. Consequently, all devices utilizing the OSiNDs: ZrO₂ cathode interlayer exhibit enhanced power conversion efficiency (PCE). Specifically, i-OSCs based on PM6:Y6 and PM6:BTP-eC9 achieve remarkable PCEs of 17.16% and 18.43%, respectively. Furthermore, the PCE of device based on PM6:Y6 maintains over 97.2% of its original value following AM 1.5G illumination (including UV light) at 100 mW cm^-2 for 600 min.

Keywords: cathode interlayer; charge recombination; light harvesting; organic solar cell; zirconium oxide.

Abstract

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