By Junshuai Li, Hong-Yu Yu (auth.), Ling Zang (eds.)
Reflecting the swift progress of nanotechnology study and the capability impression of the growing to be strength obstacle, Energy potency and Renewable power via Nanotechnology offers finished insurance of state-of-the-art study within the energy-related fields of nanoscience and nanotechnology, which goal to enhance power potency and the new release of renewable power.
Energy potency and Renewable power via Nanotechnology tightly correlates nanotechnology with power matters in a basic, finished means that makes it not just appropriate as a table reference for examine, but in addition as an information source for the non-expert common public.
Readers will locate Energy potency and Renewable strength via Nanotechnology precious in various methods, starting from the production of power coverage, to power learn improvement, and to schooling in nanotechnology and its program to energy-related difficulties. it may even be used as a chief or supplementary textbook for energy-related classes for complex undergraduate and graduate students.
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The low PCE can be ascribed to the poor photogenerated carrier separation capability and poor electrical contact, both related to the randomly grown Si-NWs array. Except for the VLS grown Si-NWs array, the low-cost ‘‘top-down’’ approaches also attract a lot of attention to fabricate stand-alone Si-NWs-based solar cells. Sivakov et al. 02 M AgNO3 and 5 M HF with a volume ratio of 1:1 . Figure 32 shows the schematic of the cell structure with a superstrate configuration . The lc À Si ðnþ Þ; lc À Si ðnÞ and lc À Si ðpþ Þ layers with the respective thicknesses of 300, 2000, and 200–400 nm were prepared by electron beam evaporation and the laser annealing, with respective doping concentrations of 5 9 1019, 6 9 1016, and 5 9 1019 cm-3.
Furthermore, light absorption is strongly affected by array periodicity. Figure 42 schematically shows the Si thin film-based solar cell configuration with a Si-NWs-textured surface. During the calculation, the thickness of the Si thin film was fixed at 800 nm. The optically optimized Si-NWs length was set as 1000 nm, which is also acceptable for the high-quality electrode preparation. 5 was taken from our previous studies [30, 31]. Figure 43a, c shows the light absorption, reflection, and transmission spectra of the studied structure (see Fig.
From the J–V measurements (see Fig. 5 mA/cm2 , although the contact and junction of the device were not optimized as observed Enhancement of Si-Based Solar Cell Efficiency Via Nanostructure Integration 49 Fig. 52 Photographs of the samples a without and b with the Si-NH texturing. (Reprinted from Nishioka et al. , copyright 2009, with permission from Elsevier) Fig. 53 Absorption spectra of the samples corresponding to those shown in Fig. 52. (Reprinted from Nishioka et al. , copyright 2009, with permission from Elsevier) from the J–V curve shape.