Ternary Organic Solar Cells by Small Amount of Efficient Light Absorption Polymer PSEHTT as Third Component Materials-Reference-Cited by-同舟云学术

Ternary Organic Solar Cells by Small Amount of Efficient Light Absorption Polymer PSEHTT as Third Component Materials

Published:2023-09-27 Issue:19 Volume:28 Page:6832
ISSN:1420-3049
Container-title:Molecules
language:en
Short-container-title:Molecules

Author:

Zhang Han¹,Jia Songrui²³⁴^ORCID,Liu Zhiyong¹⁵⁶,Chen Zheng²³⁴^ORCID

Affiliation:

1. Institute of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China

2. National and Local Joint Engineering Laboratory for Synthetic Technology of High Performance Polymer, College of Chemistry, Jilin University, Changchun 130012, China

3. Engineering Research Center of Special Engineering Plastics, Ministry of Education, College of Chemistry, Jilin University, Changchun 130012, China

4. Key Laboratory of High Performance Plastics, Ministry of Education, College of Chemistry, Jilin University, Changchun 130012, China

5. Yunnan Key Laboratory of Optoelectronic Information Technology, Kunming 650500, China

6. Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, China

Abstract

We prepared ternary organic solar cells (OSCs) by incorporating the medium wavelength absorption polymer PSEHTT into the PM6:L8-BO binary system. The power conversion efficiency (PCE) is improved from 15.83% to 16.66%. Although the fill factor (FF) is slightly reduced, the short-circuit current density (JSC) and open-circuit voltage (VOC) are significantly increased at the same time. A small amount of PSEHTT has a broad absorption spectrum in the short wavelength region and has good compatibility with PM6, which is conducive to fine-tuning the photon collection and improving the JSC. In addition, the highest occupied molecular orbital (HOMO) energy level of PSEHTT is deeper than that of PM6, which broadens the optical bandgap. This study provides an effective method to fabricate high-performance ternary OSCs by using a lower concentration of PSEHTT with PM6 as a hybrid donor material, which ensures a better surface and bulk morphology, improves photon collection, and broadens the optical bandgap.

Funder

Yunnan Expert Workstation

Spring City Plan: the High-level Talent Promotion and Training Project of Kunming

Major Science and Technology Projects for Independent Innovation of China FAW Group Co., Ltd.

Publisher

MDPI AG

Subject

Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science

Link

https://www.mdpi.com/1420-3049/28/19/6832/pdf

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