Reducing steric hindrance around electronegative atom in polymer simultaneously enhanced efficiency and stability of organic solar cells

Jiang，Qiuju1; Han，Pengwei1; Ning，Haijun1; Jiang，Jiaquan1; Chen，Hui2; Xiao，Yonghong1; Ye，Chun Rong1; Chen，Jinming1; Lin，Man1; He，Feng2,3; Huang，Xiao Chun1; Wu，Qinghe1

2022-10-01

10.1016/j.nanoen.2022.107611

Nano Energy   Impact Factor & Quartile

2211-2855

2211-3282

Uncovering the underlying rules that determine efficiency and device stability of polymer donors is crucially important for future rational design of new materials. By reducing bulkiness of alkyl chain in NTI, we synthesized polymer donor PNTB-HD. The PNTB-HD:N3 based photovoltaic device exhibits the highest PCE of 18.15% that is among the best efficiency in binary devices. More encouragingly, it demonstrates much better device thermal stability than PNTB-2T and the most widely used polymer PM6. Compared with PNTB-2T, PNTB-HD has more condensed packing and stronger tendency to preassembly in chloroform solution that is reason for simultaneously enhancement of efficiency and thermal stability. Single crystal data further revealed reducing alkyl chain bulkiness in NTI could significantly enhance short interaction of C=O...H-C between adjacent molecules that provide useful information to understand the physical property variation of two polymers. This study revealed reducing steric hindrance around electronegative atom is an effective strategy for designing high-performance polymers donors.

Short interaction Thermal stability Naphthalenothiophene imide Polymer donor Organic solar cell

SCI ; EI

English

Corresponding

National Natural Science Foundation of China["22179076","21975115","51903116"] ; Fund for Zhujiang Young Scholar[18220203] ; Department of Education of Guangdong Province["2021KCXTD032","2019KCXTD007"] ; Guangdong Provincial Key Laboratory of Catalysis[2020B121201002] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06G587] ; Shenzhen Sci-Tech Fund[KYTDPT 20181011104007]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000832170700003

ELSEVIER

20223012416074

Chemical reactions ; Chlorine compounds ; Efficiency ; Single crystals ; Thermodynamic stability

Thermodynamics:641.1 ; Solar Cells:702.3 ; Chemical Reactions:802.2 ; Production Engineering:913.1 ; Crystalline Solids:933.1

2-s2.0-85134773575

Web of Science

1.Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong,Shantou University,Shantou,Shantou,515063,China
2.Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and Technology,Shenzhen,518055,China
3.Guangdong Provincial Key Laboratory of Catalysis,Southern University of Science and Technology,Shenzhen,518055,China

Jiang，Qiuju,Han，Pengwei,Ning，Haijun,et al. Reducing steric hindrance around electronegative atom in polymer simultaneously enhanced efficiency and stability of organic solar cells[J]. Nano Energy,2022,101.

Jiang，Qiuju.,Han，Pengwei.,Ning，Haijun.,Jiang，Jiaquan.,Chen，Hui.,...&Wu，Qinghe.(2022).Reducing steric hindrance around electronegative atom in polymer simultaneously enhanced efficiency and stability of organic solar cells.Nano Energy,101.

Jiang，Qiuju,et al."Reducing steric hindrance around electronegative atom in polymer simultaneously enhanced efficiency and stability of organic solar cells".Nano Energy 101(2022).