journal article·2021-05-24

Molecularly Engineered Cyclopenta[2,1-b;3,4-b′]dithiophene-Based Hole-Transporting Materials for High-Performance Perovskite Solar Cells with Efficiency over 19%

Yan-Duo Lin, Kun-Mu Lee, Sheng Hsiung Chang, Tsung-Yu Tsai, Hsin-Cheng Chung, Chien-Chun Chou, Heng-Yu Chen, Tahsin J. Chow, Shih-Sheng Sun

ACS Applied Energy Materials· Volume 4· Issue 5
Publisher page

Abstract

Three cyclopenta[2,1-b;3,4-b′]dithiophene (CPDT)-based organic semiconductors LYC-1-LYC-3 consisting of a central dithiolane ring with triarylamine-based side groups were prepared and utilized as hole-transporting materials (HTMs) in perovskite solar cells (PSCs). Physical studies on HTM LYC-1 indicated that it exhibits high efficiency in hole transfer and a strong hole-extraction tendency from the perovskite layer. The PSC device made with LYC-1 as HTM showed a remarkable performance of 19.07%, which is much higher than the device based on spiro-OMeTAD (17.90%) under a similar condition. Moreover, the hydrophobic nature of LYC-1 protects the perovskite layer effectively from moisture and, therefore, leads to its long-term stability, i.e., retains 85% of initial efficiency after operating over 1000 h. This work demonstrates that the incorporation of a dithiolane ring in the central CPDT core is an effective way of enhancing both efficiency and stability of PSC devices.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

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

Affiliations

Department of Chemistry, Soochow University, Taipei 11102, Taiwan

Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan

Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan

Center for Green Technology, Chang Gung University, Taoyuan 33302, Taiwan

Department of Physics, Chung Yuan Christian University, Taoyuan 32023, Taiwan

Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan

Department of Chemistry, Tunghai University, Taichung 40704, Taiwan

Institute of Chemistry, Academia Sinica, Nankang, Taipei 11529, Taiwan

Funding

Ministry of Science and Technology · Chang Gung University · Academia Sinica · Chang Gung Memorial Hospital, Linkou

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