Plasmonic silver nanoparticles for improved organic solar cells

被引：170

作者：

Kalfagiannis, N. ^{[1
]}

Karagiannidis, P. G. ^{[1
]}

Pitsalidis, C. ^{[1
]}

Panagiotopoulos, N. T. ^{[2
]}

Gravalidis, C. ^{[1
]}

Kassavetis, S. ^{[1
]}

Patsalas, P. ^{[3
]}

Logothetidis, S. ^{[1
]}

机构：

[1] Aristotle Univ Thessaloniki, Dept Phys, Lab Thin Films Nanosyst & Nanometrol LTFN, GR-54124 Thessaloniki, Greece

[2] Univ Ioannina, Dept Phys, GR-45110 Ioannina, Greece

[3] Univ Ioannina, Dept Mat Sci & Engn, GR-45110 Ioannina, Greece

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2012年 / 104卷

关键词：

Silver nanoparticles; Plasmonic solar cells; Spectroscopic ellipsometry; Surface plasmon resonance; Scattering; POLYMER PHOTOVOLTAIC CELLS; VERTICAL PHASE-SEPARATION; THIN-FILMS; EFFICIENCY; POLY(3-HEXYLTHIOPHENE); ENHANCEMENT; NANOSCALE; ABSORPTION; STABILITY; NETWORK;

D O I：

10.1016/j.solmat.2012.05.018

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In the present work we compare the performance of organic solar cells, based on the bulk heterojunction system of P3HT:PCBM when adequate silver nanoparticles (NPs) are incorporated in two distinct places among the device structure. Introduction of NPs on top of the transparent anode revealed better overall performance with an increased efficiency of 17%. Alternatively, placing the NPs on top of the active photovoltaic layer resulted to 25% higher photo-current generation albeit with inferior electrical characteristics (i.e series and shunt resistance). Our findings suggest that enhanced scattering to non-specular directions from NPs site is maximized when penetrating light meets the particles after the polymer blend, but even this mechanism is not sufficient enough to explain the enhanced short circuit current observed. A second mechanism should be feasible; that is plasmon enhancement which is more efficient in the case where NPs are in direct contact with the polymer blend. J-V characteristics measured in the dark showed that NPs placed on top of the ITO film act as enhanced hole conducting sites, as evident by the lower series resistance values in these cells, suggesting this mechanism as more significant in this case. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：165 / 174

页数：10

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