有机太阳能电池简介.pdf

Organic solar cells: An overview
Harald Hoppea) and Niyazi Serdar Sariciftci
Linz Institute anic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University,
4040 Linz, Austria
(Received 8 March 2004; accepted 12 March 2004)
Organic solar cell research has developed during the past 30 years, but especially in
the last decade it has attracted scientific and economic interest triggered by a rapid
increase in power conversion efficiencies. This was achieved by the introduction of
new materials, improved materials engineering, and more sophisticated device
structures. Today, solar power conversion efficiencies in excess of 3% have been
plished with several device concepts. Though efficiencies of these thin-anic
devices have not yet reached those of their anic counterparts (␩≈ 10–20%); the
perspective of cheap production (employing, ., roll-to-roll processes) drives the
development anic photovoltaic devices further in a dynamic way. The two
competitive production techniques used today are either wet solution processing or dry
thermal evaporation of anic constituents. The field anic solar cells
profited well from the development of light-emitting diodes based on similar
technologies, which have entered the market recently. We review here the current
status of the field anic solar cells and discuss different production technologies
as well as study the important parameters to improve their performance.
I. INTRODUCTION magnitudes lower) charge-carrier mobility in these ma-
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mon materials used for photovoltaics terials, which has a large effect on the design and ef-
(., the conversion of sunlight into electrical energy) are ficiency anic semiconductor devices. However, or-
anic,1 there has been a tremendous effort to develop ganic semiconductors have relatively strong absorption
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organic solar cells within the last three –9 The coefficients (usually 10 cm ), which partly balances
field started by