Photovoltaics-Device Fabrication

The addition of In and Ga and selenization at high temperature were crucial in obtaining the 13.4%-efficient device. Photovoltaic device fabrication was completed by a CBD of about 500 A of CdS, followed by RF sputtering of 500 A of intrinsic ZnO and 3500 A of Al203-doped conducting ZnO. Bilayer Ni/Al top contacts were deposited in an e-beam system. The final step in the fabrication sequence is the deposition of lOOnm of MgF2 as an antirellection coating. [Pg.216]

Fig. 52 Topographical AFM images of PFB F8BT deposited under different preparation conditions onto a monolayer printed on a PEDOT electrode a spin-coating from xylene solution b spin-coating under a xylene-rich atmosphere from xjdene solution and c spincoating from isodurene solution (leading to homogeneous F8BT coverage), d Short-circuit EQE action spectra of photovoltaic devices fabricated hy spin-coating the hlend solution from xylene (filled circles), under a xylene-rich atmosphere (solid line), and from isodurene (open circles). (Reprinted with permission from [241], 2002, American Institute of Physics)...

Deng X, Zheng L, Yang C, Li Y, Yu G, Cao Y (2004) Polymer photovoltaic devices fabricated with blend MEHPPV and organic small molecules. J Phys Chem B 108 3451... [Pg.80]

Jin et al. (123, 264) recently reported on photovoltaic cells constructed using doped sol-gel coatings to utilize the fluorescence characteristics of [Eu (phen)2l and [Tb(bpy)2] (Fig. 24). The output of the photovoltaic devices fabricated with single crystal or amorphous silicon increases by 8-18%—a very significant improvement in efficiency. [Pg.403]

Poly-3-hexylthiophene is also a polymer of great interest, widely used in organic electronics, especially in photovoltaic devices. Fabrication of poly-3-hexylthiophene/ polyethylene oxide nanofibers (P3HT-PEO) with diameters down to 500 nm using... [Pg.181]

Besides ruthenium complexes, rhenium complexes were also used as the photosensitizers in photovoltaic cells. Bulk heterojunction photovoltaic cells fabricated from sublimable rhenium complexes exhibited a power conversion efficiency of 1.7%.75,76 The same rhenium complex moiety was incorporated into conjugated polymer chains such as polymer 16a c (Scheme 9). Fabrication of devices based on conjugated rhenium containing polymers 17a c and SPAN by the LbL deposition method was reported.77 The efficiencies of the devices are on the order of 10 4%. [Pg.174]

Photovoltaic cells with the simple device structure ITO/polymer/C6o/Al were fabricated. The power conversion efficiencies of the devices fabricated... [Pg.175]

Photovoltaic devices based on pure 29 and 29 PCBM blend as the active layer is fabricated. It was interesting to observe that a device with pure 29 showed a higher power conversion efficiency (0.05%) compared to that consisting of a 29/PCBM blend (0.0.0024% to 0.041%). The good performance in the photovoltaic cells with 29 only was attributed to the efficient charge separation process and that the material exhibits efficient hole and electron transport. The C6o moieties facilitated that electron transport, while the holes are transported via the hopping between Pt2-thiophene units. [Pg.179]

Ru complexes, and it was suggested that they are potential candidates for active photovoltaic devices. However, the absence of charge transport units in the polymer also means that bilayer or multilayer polymers are required in the fabrication of the devices. Details of the photovoltaic properties were not presented. [Pg.185]

Within the vast field of solar cell devices, organic solar cells [258-261] are experiencing important progresses in their conversion efficiencies that will possibly make them, in the near future, a competitive alternative to silicon solar cells. Moreover, this class of solar cells presents several advantages with respect to their inorganic counterpart such as their low-cost production, easy fabrication, and lightweight, all features that could allow for the fabrication of large-area, foldable, and flexible photovoltaic devices. [Pg.34]

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