PHOTOINDUCED UNIDIRECTIONAL ELECTRON-TRANSFER IN A PORPHYRIN HETEROJUNCTION

被引：22

作者：

SAVENIJE, TJ

KOEHORST, RBM

SCHAAFSMA, TJ

机构：

[1] Department of Molecular Physics, Agricultural University, 6700 ET Wageningen

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 244卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(95)00957-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Organic heterojunctions made by deposition of two different types of porphyrins onto an ITO substrate by electro-polymerisation and spin-coating exhibit rectification upon illumination. The redoxpotentials for the various porphyrin D/A combinations can be varied by using different porphyrin metal centers. Different exothermicities for photo-induced electron-transfer in this way results in different values of the short circuit current. Depending on layer thickness and type of porphyrins, the open circuit voltage is less than or equal to - 0.4 V and the incident photon to current efficiency is 2.5% at 440 nm. Possible mechanisms for the observed rectification are discussed.

引用

收藏

页码：363 / 370

页数：8

相关论文

共 19 条

[1] SYNTHESIS AND ELECTROCHEMISTRY OF CONDUCTIVE COPOLYMERIC PORPHYRINS [J].

FISH, JR ;

KUBASZEWSKI, E ;

PEAT, A ;

MALINSKI, T ;

KACZOR, J ;

KUS, P ;

CZUCHAJOWSKI, L .

CHEMISTRY OF MATERIALS, 1992, 4 (04) :795-803

[2] PHOTOINDUCED ELECTRON-TRANSFER IN THE SOLID-STATE - RATE VS FREE-ENERGY DEPENDENCE IN FIXED-DISTANCE PORPHYRIN ACCEPTOR MOLECULES [J].

GAINES, GL ;

ONEIL, MP ;

SVEC, WA ;

NIEMCZYK, MP ;

WASIELEWSKI, MR .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (02) :719-721

[3] REDOX POLYMER CONTACTS TO MOLECULAR SEMICONDUCTOR-FILMS - TOWARD KINETIC CONTROL OF INTERFACIAL EXCITON DISSOCIATION AND ELECTRON-TRANSFER PROCESSES [J].

GREGG, BA ;

KIM, YI .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (09) :2412-2417

[4]

GUNSTER S, 1993, MOL CRYST LIQ CRYST, V230, P351

[5] INTRAMOLECULAR ELECTRON AND ENERGY-TRANSFER WITHIN A BISPORPHYRIN IN A LOW-TEMPERATURE GLASS [J].

HARRIMAN, A ;

HEITZ, V ;

EBERSOLE, M ;

VANWILLIGEN, H .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (19) :4982-4989

[6] PHOTOINDUCED ELECTRON-TRANSFER IN MOLECULAR HETEROJUNCTIONS USING FLAVIN-PORPHYRIN LANGMUIR-BLODGETT MULTILAYERS [J].

ISODA, S ;

NISHIKAWA, S ;

UEYAMA, S ;

HANAZATO, Y ;

KAWAKUBO, H ;

MAEDA, M .

THIN SOLID FILMS, 1992, 210 (1-2) :290-292

[7] EFFICIENT ORGANIC PHOTOVOLTAIC CELLS - THE ROLE OF EXCITONIC LIGHT COLLECTION, EXCITON DIFFUSION TO INTERFACES, INTERNAL FIELDS FOR CHARGE SEPARATION, AND HIGH CHARGE-CARRIER MOBILITIES [J].

KARL, N ;

BAUER, A ;

HOLZAPFEL, J ;

MARKTANNER, J ;

MOBUS, M ;

STOLZLE, F .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1994, 252 :243-258

[8] ARTIFICIAL PHOTOSYNTHESIS .2. INVESTIGATIONS ON THE MECHANISM OF PHOTOSENSITIZATION OF NANOCRYSTALLINE TIO2 SOLAR-CELLS BY CHLOROPHYLL DERIVATIVES [J].

KAY, A ;

HUMPHRYBAKER, R ;

GRATZEL, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (03) :952-959

[9]

KROON JM, IN PRESS J MATER CHE

[10] DIRECTION OF PHOTOCURRENTS OF MOLECULAR PHOTODIODES WITH ORIENTED TRIAD MOLECULES [J].

SAKOMURA, M ;

FUJIHIRA, M .

THIN SOLID FILMS, 1994, 243 (1-2) :616-619