Photovoltaic effect in CuTCNQ organic thin films

Scalable approach for the realization of garland shaped 3D assembly of CuTCNQ nanorods: an efficient electron emitter

“…Amongst organic materials, 7,7,8,8-tetracyanoquinodimethane (TCNQ)-based charge transfer salts, especially CuTCNQ have stimulated great enthusiasm owing to their peculiar electrical and optical features. [6][7][8][9][10][11][12] Between the two polymorphs of CuTCNQ, the highly conductive phase I 13 with a greater number of charge carriers has registered its potential value in functional nanoscale devices. Moreover, the emergence of CuTCNQ, which endows very low turn-on eld values owing to its low work function, has helped to draw substantial research attention to organic nanostructure-based cold cathode emitters.…”

A new metal–organic hybrid material with intrinsic resistance-based bistability: monitoring in situ room temperature switching behavior

“…The Cu/Cu(TCNQ) lm/Al sandwich devices have been found to exhibit a sharp switching response under an applied voltage, but the resistivity behaviour depends on the exact conditions of lm preparation because of the presence of more than one polymorph. 15,18,[27][28][29][30][31][32] The difficulty of separating and characterizing pure crystalline phases of these distinct polymorphs is a major obstacle for understanding their physical properties. It was not until 1999, however, when we successfully obtained the rst samples of very small single crystals of Cu(TCNQ) that it was nally realized that there are two distinct polymorphs with completely different resistivity behavior.…”

“…4) reveal micrometer-sized parallelepiped crystals that grow epitaxially along the propagation axis of TCNQ stacks much like the growth of nanoribbons and nanowires reported for Cu(TCNQ) phase I and Ag(TCNQ) which bodes well for preparing similar nanodevices of 1 and 2 by the same strategies. [16][17][18][19][20][21][27][28][29][30][31][32] Temperature-dependent conductivity measurements were performed on crystalline lm samples of 1 and 2 using a twoprobe method due to the small size of the crystallites. The data revealed that 1 exhibits good semiconducting behavior with a This journal is © The Royal Society of Chemistry 2014 room temperature conductivity of 0.25 S cm À1 (Fig.…”