http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Birkel, Alexander,Lee, Yong-Gun,Koll, Dominik,Meerbeek, Xavier Van,Frank, Stefan,Choi, Mi Jin,Kang, Yong Soo,Char, Kookheon,Tremel, Wolfgang The Royal Society of Chemistry 2012 Energy & environmental science Vol.5 No.1
<p>Highly efficient dye-sensitized solar cells (DSSCs) with excellent long-term stability were fabricated based on tin(<SMALL>IV</SMALL>) oxide (SnO<SUB>2</SUB>) nanocrystals with tunable morphologies and band energy levels. The nanocrystals were prepared by a facile, fast, and energy-saving microwave-assisted solvothermal reaction. Through variation of the precursor base used during nanocrystal synthesis control over morphology was achieved—precursor metal cations are known to have a strong influence on the growth process of SnO<SUB>2</SUB> nanostructures. A simple and economic way to prepare semiconducting pastes for photoanodes was devised. The photovoltaic performance of dye-sensitized solar cells based on SnO<SUB>2</SUB> photoanodes was investigated. A very high power conversion efficiency of up to 3.2%, based on very high <I>V</I><SUB>oc</SUB> and comparable <I>J</I><SUB>sc</SUB> and FF [under 1 Sun condition (AM 1.5, 100 mW cm<SUP>−2</SUP>, with shading masks)] was achieved, reporting the highest efficiency value for the cells based on unmodified SnO<SUB>2</SUB> nanocrystals so far. In order to elucidate the efficient cell behavior, electrochemical properties such as the charge transport in the photoanodes as well as SnO<SUB>2</SUB>/electrolyte interfacial properties were investigated. Uncharacteristically for DSSCs, all devices tested in the present study show an unusual long-term stability under ambient conditions over several weeks.</p> <P>Graphic Abstract</P><P>Dye-sensitized solar cells (DSSCs) with efficiencies reaching up to 3.2% have been fabricated employing SnO<SUB>2</SUB> nanoparticles with different morphologies, prepared by a fast, facile and energy-efficient microwave-assisted solvothermal synthesis. <img src='http://pubs.rsc.org/ej/EE/2012/c1ee02115j/c1ee02115j-ga.gif'> </P>