Journal
JOULE
Volume 6, Issue 12, Pages 2835-2848Publisher
CELL PRESS
DOI: 10.1016/j.joule.2022.10.005
Keywords
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Funding
- National Natural Science Foundation of China [52103221]
- Shandong Provincial Natural Science Foundation [ZR2021QB024, ZR2021QB179, ZR2021ZD06]
- Fundamental Research Funds of Shandong University
- Guangdong Basic and Applied Basic Research Foundation [2019B151502060]
- National Nature Science Foundation of China [21790050, 21790051]
- DOE, Office of Science
- DOE, Office of Basic Energy Sciences
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A highly efficient all-small-molecule organic solar cell with a power conversion efficiency of 17.18% is demonstrated through layer-by-layer deposition and solid additive treatment. The controlled morphology allows for ordered molecular stacking and vertical charge transport, resulting in enhanced carrier generation and transport.
All-small-molecule organic solar cell (ASM OSC) with an efficiency of up to 17.18% is demonstrated via combining layer-by-layer (LbL) deposition and solid additive methoxy-substituted graphdiyne (GOMe) treatment to manipulate active layer morphology. The rationally controlled morphology with ordered molecular stacking and vertical distribution has dual advantages, as the solid additive GOMe is a good molecular stacking regulator, and LbL configuration serves as a vertical charge-transporting highway with sufficient donor/acceptor interfaces, benefiting carrier generation and transport enhancement simultaneously. A remarkable fill factor of = 77.31% is recorded, and an efficiency of 17.18% is the highest power conversion efficiency (PCE) for ASM OSCs reported to date.
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