期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 1, 期 45, 页码 14350-14357出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta13002a
关键词
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资金
- U.S. National Science Foundation [NSF-CBET-0931587]
- ACS Petroleum Research Fund [PRF-51799-ND10]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0931587] Funding Source: National Science Foundation
It is well-known that promoter and poison are two contradictory properties of materials. However, in this work, an unusual particle-size-induced promoter-to-poison transition of ZrN has been observed for the counter electrode of poly(3,4-ethylene-dioxythiophene):polystyrene sulfonate (PEDOT:PSS) in dye-sensitized solar cells (DSSCs). If the primary crystal particle size of ZrN is 37 nm, it plays a promoting role for PEDOT: PSS counter electrodes, leading to a remarkable increase in DSSC power conversion efficiency. In contrast, when its primary crystal particle size is decreased to 21 nm, ZrN becomes a serious poison for PEDOT: PSS counter electrodes. This finding would be important for the development of highly efficient DSSC counter electrodes.
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