Identifying the Nature of Charge Recombination in Organic Solar Cells from Charge-Transfer State Electroluminescence

被引：99

作者：

Wetzelaer, Gert-Jan A. H. ^{[1
,2
]}

Kuik, Martijn ^{[1
]}

Blom, Paul W. M. ^{[1
,3
]}

机构：

[1] Univ Groningen, Zernike Inst Adv Mat, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

[2] Dutch Polymer Inst, NL-5600 AX Eindhoven, Netherlands

[3] TNO Holst Ctr, NL-5605 KN Eindhoven, Netherlands

来源：

ADVANCED ENERGY MATERIALS | 2012年 / 2卷 / 10期

关键词：

charge-carrier recombination; charge-transfer states; electroluminescence; organic solar cells;

D O I：

10.1002/aenm.201200009

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：

Charge-transfer (CT) state electroluminescence is investigated in several polymer:fullerene bulk heterojunction solar cells. The ideality factor of the electroluminescence reveals that the CT emission in polymer:fullerene solar cells originates from free-carrier bimolecular recombination at the donor-acceptor interface, rather than a charge-trap-mediated process. The fingerprint of the presence of nonradiative trap-assisted recombination, a voltage-dependent CT electroluminescence quantum efficiency, is only observed for the P3HT:PCBM system, which is explained by a reduction of the competing bimolecular recombination rate. These results are in agreement with measurements of the illumination-intensity dependence of the open-circuit voltage.

引用

页码：1232 / 1237

页数：6

共 39 条

[1]

Green M.A., Emery K., Hishikawa Y., Warta W., Dunlop E.D., Prog. Photovoltaics Res. Appl., 20, (2012)

[2]

Service R.F., Science, 332, (2011)

[3]

Langevin P., Ann. Chim. Phys., 28, (1903)

[4]

Blom P.W.M., De Jong M.J.M., Breedijk S., Appl. Phys. Lett., 71, (1997)

[5]

Pivrikas A., Juska G., Osterbacka R., Westerling M., Viliunas M., Arlauska K., Stubb H., Phys. Rev. B, 71, (2005)

[6]

Mandoc M.M., Kooistra F.B., Hummelen J.C., De Boer B., Blom P.W.M., Appl. Phys. Lett., 91, (2007)

[7]

Mandoc M.M., Veurman W., Koster L.J.A., De Boer B., Blom P.W.M., Adv. Funct. Mater., 17, (2007)

[8]

Wetzelaer G.A.H., Kuik M., Nicolai H.T., Blom P.W.M., Phys. Rev. B, 83, (2011)

[9]

Kuik M., Nicolai H.T., Lenes M., Wetzelaer G.A.H., Lu M., Blom P.W.M., Appl. Phys. Lett., 98, (2011)

[10]

Kuik M., Koster L.J.A., Wetzelaer G.A.H., Blom P.W.M., Phys. Rev. Lett., 107, (2011)

← 1 2 3 4 →