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Titolo:
Molecular weight dependent electroluminescence of silicon polymer near-ultraviolet light-emitting diodes
Autore:
Hoshino, S; Furukawa, K; Ebata, K; Yuan, CH; Suzuki, H;
Indirizzi:
Nippon Telegraph & Tel Publ Corp, NTT Lifestyle & Environm Technol Labs, Kanagawa 2430198, Japan Nippon Telegraph & Tel Publ Corp Kanagawa Japan 2430198 a 2430198, Japan Nippon Telegraph & Tel Publ Corp, NTT Basic Res Labs, Kanagawa 2430198, Japan Nippon Telegraph & Tel Publ Corp Kanagawa Japan 2430198 a 2430198, Japan Nippon Telegraph & Tel Publ Corp, NTT Photon Labs, Kanagawa 2430198, JapanNippon Telegraph & Tel Publ Corp Kanagawa Japan 2430198 a 2430198, Japan
Titolo Testata:
JOURNAL OF APPLIED PHYSICS
fascicolo: 5, volume: 88, anno: 2000,
pagine: 2892 - 2897
SICI:
0021-8979(20000901)88:5<2892:MWDEOS>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYSILANE HIGH POLYMERS; BACKBONE POLYMERS; TRANSPORT; CHAIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Hoshino, S Nippon Telegraph & Tel Publ Corp, NTT Lifestyle & Environm Technol Labs, 3-1 Morinosato Wakamiya, Kanagawa 2430198, Japan Nippon Telegraph& Tel Publ Corp 3-1 Morinosato Wakamiya Kanagawa Japan 2430198
Citazione:
S. Hoshino et al., "Molecular weight dependent electroluminescence of silicon polymer near-ultraviolet light-emitting diodes", J APPL PHYS, 88(5), 2000, pp. 2892-2897

Abstract

We investigated the electroluminescence (EL) of single-layer near-ultraviolet (NUV) light-emitting diodes (LEDs) made from poly[bis(p-n-butylphenyl)silane] (PBPS) with three different molecular weights (MWs). Although the NUV EL spectra of the three LEDs exhibited no noticeable differences, we observed a marked MW dependence on such aspects of the operating performance asthe EL external quantum efficiency, EL threshold current density and electric field, which were improved as the MW of PBPS decreased. The MW dependence of the hole transport behavior suggested that the MW decrease promoted positive space charge formation in the PBPS layer during LED operation. We attributed the origin of the MW dependence of the LED performance to this positive space charge formation, which played an important role in improving the electron-hole supply balance from the external electrodes of the LED. (C) 2000 American Institute of Physics. [S0021- 8979(00)06717-7].

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/21 alle ore 02:40:26