Semiconductor nanocrystals photosensitize C60 crystals

被引：64

作者：

Biebersdorf, Andreas

Dietmuller, Roland

Susha, Andrei S.

Rogach, Andrey L.

Poznyak, Sergey K.

Talapin, Dmitri V.

Weller, Horst

Klar, Thomas A. ^{[1
]}

Feldmann, Jochen

机构：

[1] Univ Munich, Photon & Optoelect Grp, Dept Phys, D-80799 Munich, Germany

[2] Univ Munich, CeNS, D-80799 Munich, Germany

[3] Belarusian State Univ, Phys Chem Res Inst, Minsk 220050, BELARUS

[4] Univ Hamburg, Inst Phys Chem, D-20146 Hamburg, Germany

来源：

NANO LETTERS | 2006年 / 6卷 / 07期

关键词：

D O I：

10.1021/nl060136g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Semiconductor nanocrystals (SCNCs) made of CdSe, CdTe, and InP are used to photosensitize needlelike C-60 crystals. The photocurrent is increased by up to 3 orders of magnitude as compared with C60 crystals without SCNCs. The photocurrent spectrum can be tuned precisely by the SCNC size and material, rendering the SCNC-functionalized C-60 crystals an excellent material for spectrally tuneable photodetectors. We explain the increased photocurrent as a result of photoexcited electrons transferring from the SCNCs to the C-60 crystals and causing photoconductivity, while the complementary holes remain trapped in the SCNCs.

引用

页码：1559 / 1563

页数：5

共 31 条

[1] ELECTRICAL-CONDUCTIVITY IN DOPED POLYACETYLENE
CHIANG, CK
FINCHER, CR
PARK, YW
HEEGER, AJ
SHIRAKAWA, H
LOUIS, EJ
GAU, SC
MACDIARMID, AG
[J]. PHYSICAL REVIEW LETTERS, 1977, 39 (17) : 1098 - 1101
[2] Thiol-capping of CdTe nanocrystals:: An alternative to organometallic synthetic routes
Gaponik, N
Talapin, DV
Rogach, AL
Hoppe, K
Shevchenko, EV
Kornowski, A
Eychmüller, A
Weller, H
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (29) : 7177 - 7185
[3] Efficient phase transfer of luminescent thiol-capped nanocrystals: From water to nonpolar organic solvents
Gaponik, N
Talapin, DV
Rogach, AL
Eychmuller, A
Weller, H
[J]. NANO LETTERS, 2002, 2 (08) : 803 - 806
[4] Charge injection and transport in films of CdSe nanocrystals
Ginger, DS
Greenham, NC
[J]. JOURNAL OF APPLIED PHYSICS, 2000, 87 (03) : 1361 - 1368
[5] Charge separation and transport in conjugated-polymer/semiconductor-nanocrystal composites studied by photoluminescence quenching and photoconductivity
Greenham, NC
Peng, XG
Alivisatos, AP
[J]. PHYSICAL REVIEW B, 1996, 54 (24): : 17628 - 17637
[6] CONDUCTING FILMS OF C60 AND C70 BY ALKALI-METAL DOPING
HADDON, RC
HEBARD, AF
ROSSEINSKY, MJ
MURPHY, DW
DUCLOS, SJ
LYONS, KB
MILLER, B
ROSAMILIA, JM
FLEMING, RM
KORTAN, AR
GLARUM, SH
MAKHIJA, AV
MULLER, AJ
EICK, RH
ZAHURAK, SM
TYCKO, R
DABBAGH, G
THIEL, FA
[J]. NATURE, 1991, 350 (6316) : 320 - 322
[7] Exciton diffusion and dissociation in conjugated polymer fullerene blends and heterostructures
Haugeneder, A
Neges, M
Kallinger, C
Spirkl, W
Lemmer, U
Feldmann, J
Scherf, U
Harth, E
Gügel, A
Müllen, K
[J]. PHYSICAL REVIEW B, 1999, 59 (23): : 15346 - 15351
[8] Photoconduction in solid films of C-60
Kalinowski, J
Giro, G
Camaioni, N
Fattori, V
DiMarco, P
[J]. SYNTHETIC METALS, 1996, 77 (1-3) : 181 - 188
[9] C-60 - BUCKMINSTERFULLERENE
KROTO, HW
HEATH, JR
OBRIEN, SC
CURL, RF
SMALLEY, RE
[J]. NATURE, 1985, 318 (6042) : 162 - 163
[10] Determination of quantum confinement in CdSe nanocrystals by cyclic voltammetry
Kucur, E
Riegler, J
Urban, GA
Nann, T
[J]. JOURNAL OF CHEMICAL PHYSICS, 2003, 119 (04) : 2333 - 2337

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