Heat Transfer Enhancement of n-Type Organic Semiconductors by an Insulator Blend Approach

Zhang，Zhuoqiong1,2; Tang，Yabing3; Wang，Yunfan4; Zeng，Zixin4; Shi，Run2; Yan，Han3; Tsang，Sai Wing4; Cheng，Chun2; So，Shu Kong1

2022

10.1021/acsami.2c05503

ACS Applied Materials & Interfaces   Impact Factor & Quartile

1944-8244

1944-8252

The transfer of heat energy in organic semiconductors (OSCs) plays an important role in advancing the applications of organic electronics, especially for lifetime issues. However, compared with crystalline inorganic semiconductors, the thermal transport of OSCs is less efficient and a relevant understanding is very limited. In this contribution, we show that the heat conduction of OSCs can be enhanced by blending with a "commodity"insulator (both thermal and electrical). PC71BM, a well-known electron transporter but poor thermal conductor, was selected as the host OSC material. The blending of a small amount of polystyrene (PS), a commonly used insulating polymer, can facilitate the heat transfer of PC71BM films, as substantiated by the scanning photothermal deflection technique and an infrared thermal camera. The phase thermodynamics of PC71BM/PS blends indicates that the efficient heat transfer preferably occurs in the OSC/insulator blends with better intimate mixing, where isolated PC71BM domains can be effectively bridged by PS that thread through the regions. The applicability of this approach can be observed in blends with another host material-ITIC. This work provides a facile strategy for designing thermally durable organic electronic devices.

heat transfer insulator blends n-type organic semiconductors organic field-effect transistor thermal management thermal stability thermal transport

SCI ; EI

English

Corresponding

WOS:000818727700001

20223012406688

Blending ; Crystalline materials ; Heat conduction ; Polymer films ; Thermodynamic stability

Thermodynamics:641.1 ; Heat Transfer:641.2 ; Semiconductor Devices and Integrated Circuits:714.2 ; Chemical Operations:802.3 ; Polymeric Materials:815.1 ; Crystalline Solids:933.1

2-s2.0-85134360266

Scopus

1.Department of Physics and Institute of Advanced Materials,Hong Kong Baptist University,Kowloon Tong,Hong Kong
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.State Key Laboratory For Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an,710049,China
4.Department of Materials Science and Engineering,City University of Hong Kong,Kowloon Tong,Hong Kong

Zhang，Zhuoqiong,Tang，Yabing,Wang，Yunfan,et al. Heat Transfer Enhancement of n-Type Organic Semiconductors by an Insulator Blend Approach[J]. ACS Applied Materials & Interfaces,2022,14:30174-30181.

Zhang，Zhuoqiong.,Tang，Yabing.,Wang，Yunfan.,Zeng，Zixin.,Shi，Run.,...&So，Shu Kong.(2022).Heat Transfer Enhancement of n-Type Organic Semiconductors by an Insulator Blend Approach.ACS Applied Materials & Interfaces,14,30174-30181.

Zhang，Zhuoqiong,et al."Heat Transfer Enhancement of n-Type Organic Semiconductors by an Insulator Blend Approach".ACS Applied Materials & Interfaces 14(2022):30174-30181.