期刊
SOLAR ENERGY
卷 206, 期 -, 页码 287-293出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2020.06.017
关键词
Nucleobases; Nanowires; Organic solar cells; Electron transport layers
资金
- Basic Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2019R1I1A3A01059493, 2020R1I1A3A04037241]
- National Research Foundation of Korea [2019R1I1A3A01059493, 2020R1I1A3A04037241] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ultrathin uracil-complexed CdS nanowires (U-CdS NWs) were synthesized using a facile wet-chemical process and exploited as an effective electron transport layer (ETL) in organic solar cells (OSCs). The U-CdS NW layer acted as a functional interfacial layer between the active organic and inorganic ZnO films; the functional N-H and C=O groups in uracil passivated the ZnO surface defects and CdS provided a favorable energy band alignment, which facilitated electron transportation. As a result, the power-conversion efficiency (PCE) of the OSC with U-CdS NWs was 3.52% (maximum PCE of 3.7%), which was 22% higher than that of an OSCs with bare ZnO. Moreover, OSCs with U-CdS NWs had two times longer storage lifetimes because of the enhanced interfacial quality and the hydrophobic nature of U-CdS NWs. These results demonstrate the potential of U-CdS NWs for enhancing the efficiency and stability of OSCs and represent an important step toward the commercialization of OSCs.
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