Dual function hybrid polymer-nanoparticle devices

Abstract

Dual properties of photoconduction and electroluminescence (EL) in hybrid devices consisting of a nanocluster semiconductor layer and a polymer are reported. It is observed that the photocurrent spectral response and efficiency in these multilayer devices are similar to that of the semiconductor component, while the EL spectral responses are closer to that of the polymer layer. The results are confirmed using the nanoparticle semiconductor, cadmium sulphide CdS, of different particle sizes and polymers representing a wide spectral range. A general feature of efficient photocurrent spectral response corresponding to nanoparticle and an appreciable EL response corresponding more to the active polymer are observed in all devices and results in wide, separated spectral windows. Current–voltage responses also indicate possibilities of added tunability in these devices.

Photocurrent generation in a CdS nanocrystals/poly[2-methoxy-5-(2′-ethyl-exyloxy)phenylene vinylene] electrochemical cell

“…Nanodisperse heterojunctions based on colloidal semiconductor nanocrystals (NCs) and conjugated polymers are subject of intense studies for fundamental research and applications ranging from light emitting diodes [1][2][3] to solar cells [4][5][6][7][8][9][10].…”

Mesoscopic Assembly and Other Properties of Metal and Semiconductor Nanocrystals

“…Several polymer/polyelectrolyte-nanocrystal hybrid devices have been fabricated seeking to exploit the electro and photoluminescent properties of such material [179][180][181][182][183][184][185][186][187][188]. Device fabrication in all these cases is by low-cost self-assembly based techniques.…”

Photoinduced electron transfer within a novel synthesized short-chain dyad

“…This research possesses technological importance especially for constructing light emitting diodes (LEDs), photovoltaic cells, organic solar cells and artificial or model photosynthetic devices, etc. [13][14][15][16][17][18][19][20][21][22][23][24]. Because of the complexity in biological systems, many model compounds in which electron donors and acceptors are connected by covalent bonds were synthesized.…”