Nanotube-Silicon Heterojunction Solar Cells (p NA) Yi Jia, Jinquan Wei, Kunlin Wang, Anyuan Cao, Qinke Shu, Xuchun Gui, Yanqiu Zhu, Daming Zhuang, Gong Zhang, Beibei Ma, Liduo Wang, Wenjin Liu, Zhicheng Wang, Jianbin Luo, Dehai Wu Published Online: Oct 17 2008 7:29AM DOI: 10.1002/adma.200801810
Nanotube-Si heterojunction solar cells are fabricated by coating a thin film of double-walled carbon nanotubes on n-type silicon wafers. These solar cells show power-conversion efficiencies in the range of 5-7%. The nanotubes perform multiple functions in the cells, including charge separation, charge transport, and charge collection.
Synthesis of Semiconducting Functional Materials in Solution: From II-VI Semiconductor to Inorganic-Organic Hybrid Semiconductor Nanomaterials (p NA) Wei-Tang Yao, Shu-Hong Yu Published Online: Oct 17 2008 7:29AM DOI: 10.1002/adfm.200800672
New and emerging solution-synthesis strategies for semiconducting nanomaterials and inorganic-organic semiconductor hybrid materials are highlighted. A variety of II-VI semiconductor nanostructures and their hybrid nanocomposites can be synthesized by solution strategies in a pure solvent or a mixed solvent (see figure).
Heterointerfaces in Semiconductor Nanowires (p NA) Ritesh Agarwal Published Online: Oct 17 2008 7:31AM DOI: 10.1002/smll.200800556
Semiconductor nanowires have unique properties such as highly anisotropic geometry, large surface-to-volume ratio, and carrier and photon confinement. Currently, tremendous efforts are devoted to the rational synthesis of advanced nanowire heterostructures (see image). For functional devices to be made from these materials, precise control over composition, structure, morphology, and dopant concentration is needed. Progress, promise, and challenges in the area of nanowire heterostructured materials are reviewed, with particular emphasis on the effect of different types of heterointerfaces on device properties.