18.63% Efficiency of Ternary Organic Solar Cells Achieved via Nonhalogenated Solvent and Hot Spin‐Coating Process

Author:

Huang Tianhuan1,Geng Shuang1,Wang Dongjie1,Zhang Yang1,Weng Nan1,Li Xiao1,Liao Qiaogan1,Zhang Zheling1,Lu Jiangrong1ORCID,Zhang Jian1

Affiliation:

1. Engineering Research Center of Electronic Information Materials and Devices (Ministry of Education) School of Materials Science and Engineering School of Mechanical and Electrical Engineering Guangxi Key Laboratory of Information Materials Guilin University of Electronic Technology Guilin Guangxi 541004 P. R. China

Abstract

AbstractThe solubility problem of conjugated polymers in nonhalogenated solvents limits the application of nonhalogenated solvents in Organic solar cells (OSCs). By combining with a hot spin‐coating process, efficient PM6:BTP‐BO‐4F:GS‐ISO ternary OSCs are prepared by employing o‐xylene as a solvent. After adding 10 wt% content of GS‐ISO to PM6:BTP‐BO‐4F, the surface morphology in the active layers is improved and the charge extraction, transport, and collection in OSCs are enhanced. Compared with the efficiency of PM6:BTP‐BO‐4F OSCs (16.25%), an efficiency of 18.63% is achieved for PM6:BTP‐BO‐4F:GS‐ISO ternary OSCs. Moreover, PM6:BTP‐BO‐4F:GS‐ISO ternary OSCs with an efficiency of 14.13% are prepared in air. The work provides a new strategy for preparing efficient and environmentally friendly OSCs using green solvents.

Funder

National Natural Science Foundation of China

Guangxi Key Laboratory of Information Materials

Guilin University of Electronic Technology

Publisher

Wiley

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