期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 122, 期 31, 页码 17601-17611出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.8b01949
关键词
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资金
- Ministry of Science and Technology, Taiwan [MoST 105-2119-M002-030-MY3]
- Academia Sinica, Taiwan [AS-106-SS-A02, 2394-106-0300]
- Center of Atomic Initiative for New Materials (AI Mat), National Taiwan University, Taipei, Taiwan from the Featured Areas Research Center Program by the Ministry of Education (MOE) in Taiwan
A series of layered-structure perovskite solar cells with three different HTM layers consisting of P3HT, PBTTTV-h, and spiro-OMeTAD were fabricated to investigate intermolecular and interfacial defect density in the devices. Charge-based deep level transient spectroscopy is a powerful tool for analyzing defects within devices. We observe the improvement of fill factor associated with the defect density, resulting in the reduction of interfacial charge recombination. The hysteresis behavior of the devices depends on the trap concentration in the materials and interfaces by charge trapping as well as the recombination processes. The details are discussed in our report.
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