journal article·2020-09-16Open access

Efficient Naphthalene Imide-Based Interface Engineering Materials for Enhancing Perovskite Photovoltaic Performance and Stability

Helin Wang, Yu Guo, Lanlan He, Lars Kloo, Jun Song, Junle Qu, Peng-Cheng Qian, Wai-Yeung Wong

ACS Applied Materials & Interfaces· Volume 12· Issue 37

Abstract

The ways to overcome surface charge recombination and poor interface contact are still the central challenges for the development of inorganic–organic hybrid halide perovskite solar cells (PSCs). [6,6]-Phenyl C61 butyric acid methyl ester (PCBM) is commonly employed in PSCs, but it has some disadvantages including high charge recombination and poor surface coverage. Therefore, the addition of an interfacial engineering layer showing efficient surface passivation, electron extraction, and excellent interface contact can solve the above problems. Furthermore, by employing interface engineering with a spike structure of the energy levels, the reduced energy losses are beneficial to elevating the open-circuit voltage (Voc) in PSCs. Herein, the linear naphthalene imide dimer containing an indacenodithiophene unit (IDTT2NPI) has been developed as an excellent interface engineering material to strengthen the perovskite performance. The introduction of a spike interface on the top of a methylammonium lead triiodide (MAPbI3) film resulted in a high Voc of 1.12 V with the optimal efficiency reaching 20.2%. The efficiency enhancement can be traced to the efficient surface passivation and enhanced interface contact. The mechanism of IDTT2NPI as the interface engineering layer was investigated by both experiments and theoretical calculations. This work provides a promising naphthalene imide-based interfacial material for high-efficiency and stable PSCs.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Chalcogenide Semiconductor Thin Films

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

Affiliations

Center for Biomedical Optics and Photonics (CBOP) & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems, Shenzhen University, Shenzhen 518060, Guangdong, P. R. China

Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong 999077, P. R. China

Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology, Stockholm SE-10044, Sweden

Key Laboratory of Environmental Functional Materials Technology and Application of Wenzhou City, Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China

The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, Guangdong, P. R. China

Funding

Vetenskapsr?det · Wenzhou Municipal Science and Technology Bureau · Research Grants Council, University Grants Committee · Ministry of Science and Technology of the People's Republic of China · Shenzhen Science and Technology Innovation Commission · Department of Education of Guangdong Province · Stiftelsen Olle Engkvist Byggm?stare · National Natural Science Foundation of China · Hong Kong Polytechnic University

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