DataVXACS Applied Materials & InterfacesPaper
journal article·2021-02-24

Construction of an Iodine Diffusion Barrier Using Network Structure Silicone Resin for Stable Perovskite Solar Cells

Dongxu Lin, Xin Xu, Jiming Wang, Tiankai Zhang, Fangyan Xie, Li Gong, Jian Chen, Tingting Shi, Jifu Shi, Pengyi Liu, Weiguang Xie

ACS Applied Materials & Interfaces· Volume 13· Issue 7
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Source abstract

Abstract

Long-term stability of organic-inorganic hybrid perovskite solar cells (PSCs) is inhibited by ion diffusion. Herein, we introduce a thermally stable and hydrophobic silicone resin layer with a network structure as an interfacial layer between the perovskite and the hole-transporting layer (HTL). Experimental and theoretical investigations confirm that the small Si-O-Si unit in the network forms both Si-I and Pb-O bonds with the perovskite surface, which physically and chemically inhibit the diffusion and self-release of iodine. Besides, the silicone resin layer suppresses the thermal crystallization of spiro-OMeTAD and optimizes the interfacial energy level alignment for hole extraction. The power conversion efficiency (PCE) of a perovskite solar cell with a silicone resin layer is improved to 21.11%. The device maintains more than 90.1% of its original PCE after 1200 h under 85 °C thermal stress, 99.6% after 2000 h under RH ∼55 ± 5%, and 83% of its original PCE after light soaking in air for 1037 h.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Light-Emitting Diodes Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, Peopleʼs Republic of China

State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, Peopleʼs Republic of China

Biomolecular and Organic Electronics, IFM, Linköping University, Linköping 58183, Sweden

Instrumental Analysis & Research Center, Sun Yat-sen University, Guangzhou 510275, Peopleʼs Republic of China

Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou, Guangdong 510632, Peopleʼs Republic of China

Funding

Guangdong Science and Technology Department · Ministry of Education of the People's Republic of China · National Natural Science Foundation of China

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