Nanocrystalline Si EL Devices

Direct Electropolymerization of Poly(para-phenylene)vinylene Films on Si and Porous Si

“…Figure 8 shows the EL characteristics of n + /PSi/Au and n + /PPV/Au devices. A red emission typical of the PSi devices is obtained, 33 while the EL spectrum established for the PPV device agrees well with the PL measurement. Compared with EL measurements obtained from Al/ electrodeposited PPV/ITO devices, 26 there is no threshold voltage suggesting that the Si/PPV/Au device can be a promising candidate for the fabrication of a functional hybrid device.…”

“…27,28 Hence, PSi has attracted attention with its remarkable optical properties including efficient red 29,30 and blue 31 luminescence, blue phosphorescence, 32 and EL. [33][34][35] In general, the electrochemical route is a convenient way to synthesize tailored polymers on semiconductor surfaces, especially on both Si and PSi. For instance, the mechanism of formation and the properties of electrosynthesized polyaniline and polypyrrole thin films have been reported.…”

Structural and Optical Properties of Electropolymerized Poly(para-phenylene)vinylene Films on Si and Porous Si

“…Figure 7 shows the EL characteristics of n + /PPV/Au and n + /PSi/Au devices. The EL obtained for PSi is typical of such devices (37). The emission is red.…”

“…Furthermore, PSi extends the possibilities of Si towards various photonic, sensing and medical applications (31,32). Efficient red (33,34) and blue (35) luminescence, blue phosphorescence (36), as well as the possibility of electroluminescence (EL) (37)(38)(39) are also valuable advantages of PSi. The deposition of PPV onto Si and PSi could lead to the development of new functional hybrid devices.…”