Kinetics of interfacial charges in hybrid GaAs/oligothiophene semiconducting heterojunctions

被引：9

作者：

Cabanillas-Gonzalez, Juan ^{[1
]}

Gambetta, Alessio ^{[1
]}

Zavelani-Rossi, Margherita ^{[1
]}

Lanzani, Guglielmo ^{[1
]}

机构：

[1] Politecn Milan, INFM, ULTRAS, Dipartmento Fis,IFN CNR, I-20133 Milan, Italy

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 12期

关键词：

D O I：

10.1063/1.2771038

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors report on pump-probe measurements in a hybrid heterostructure consisting of a modified oligothiophene layer deposited over a GaAs substrate. Upon photoexcitation of the bilayer with 100 fs, a new photoinduced absorption band (PA(2)) appeared being attributed to oligothiophene cations arising from exciton diffusion and dissociation at the hybrid inorganic/organic interface. An exciton diffusion length in the organic layer of approximately 3.4 nm was estimated. (c) 2007 American Institute of Physics.

引用

页数：3

共 21 条

[1] Tuning solid-state photoluminescence frequencies and efficiencies of oligomers containing one central thiophene-S,S-dioxide unit [J].

Barbarella, G ;

Favaretto, L ;

Sotgiu, G ;

Zambianchi, M ;

Bongini, A ;

Arbizzani, C ;

Mastragostino, M ;

Anni, M ;

Gigli, G ;

Cingolani, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (48) :11971-11978

[2] Influence of chain length and derivatization on the lowest singlet and triplet states and intersystem crossing in oligothiophenes [J].

Beljonne, D ;

Cornil, J ;

Friend, RH ;

Janssen, RAJ ;

Bredas, JL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (27) :6453-6461

[3] Organic photovoltaics: technology and market [J].

Brabec, CJ .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2004, 83 (2-3) :273-292

[4] Photophysics of charge transfer in a polyfluorene/violanthrone blend [J].

Cabanillas-Gonzalez, J ;

Virgili, T ;

Lanzani, G ;

Yeates, S ;

Ariu, M ;

Nelson, J ;

Bradley, DDC .

PHYSICAL REVIEW B, 2005, 71 (01)

[5] Low band gap donor-acceptor conjugated polymers toward organic solar cells applications [J].

Colladet, Kristof ;

Fourier, Sofie ;

Cleij, Thomas J. ;

Lutsen, Laurence ;

Gelan, Jan ;

Vanderzande, Dirk ;

Nguyen, Le Huong ;

Neugebauer, Helmut ;

Sariciftci, Serdar ;

Aguirre, Aranzazu ;

Janssen, Griet ;

Goovaerts, Etienne .

MACROMOLECULES, 2007, 40 (01) :65-72

[6]

CORNIL J, 1994, ADV MAT, V6, P64

[7]

EMMI SS, 2006, RADIAT PHYS CHEM, V67, P251

[8] SUBPICOSECOND CARRIER LIFETIME IN GAAS GROWN BY MOLECULAR-BEAM EPITAXY AT LOW-TEMPERATURES [J].

GUPTA, S ;

FRANKEL, MY ;

VALDMANIS, JA ;

WHITAKER, JF ;

MOUROU, GA ;

SMITH, FW ;

CALAWA, AR .

APPLIED PHYSICS LETTERS, 1991, 59 (25) :3276-3278

[9] ULTRAFAST CARRIER DYNAMICS IN III-V-SEMICONDUCTORS GROWN BY MOLECULAR-BEAM EPITAXY AT VERY LOW SUBSTRATE TEMPERATURES [J].

GUPTA, S ;

WHITAKER, JF ;

MOUROU, GA .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1992, 28 (10) :2464-2472

[10] Field-effect transistor made with a sexithiophene single crystal [J].

Horowitz, G ;

Garnier, F ;

Yassar, A ;

Hajlaoui, R ;

Kouki, F .

ADVANCED MATERIALS, 1996, 8 (01) :52-&

← 1 2 3 →