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[×ÊÔ´] JACS¿¯µÇ ÖÓлª½ÌÊÚÁ¿×ÓµãÌ«ÑôÄÜµç³ØµÄ×îнøÕ¹CuInS2-QDSCs

ÎÄÕÂÌâÄ¿£ºHigh Efficiency "Green" Quantum Dot Solar Cells
ÎÄÕÂÕªÒª£ºSemiconductor Quantum Dots (QDs) are extremely interesting materials for the development of photovoltaic devices, but currently present the drawback that the most efficient devices have been prepared with toxic heavy metals of Cd or Pb. Solar cells based on "green" QDs totally free of Cd or Pb present a modest efficiency of 2.52%. Herein we achieve effective surface passivation of the ternary CuInS2 (CIS) QDs that provides high photovoltaic quality core/shell CIS/ZnS (CISZ) QDs, leading to the development of high efficiency "green" QD solar cells that surpass the performance of those based on the toxic cadmium and lead chalcogenides QDs. Using wide absorption range QDs, CISZ based Quantum Dot Sensitized Solar Cell (QDSC) configuration with high QD loading and taking benefit of the recombination reduction with typeI core/shell structure, we boost the power conversion efficiency of Cd and Pb free QDSC
to a record of 7.04% (with certified efficiency of 6.66%) under AM 1.5G one sun irradiation. This efficiency is the best performance to date for QDSCs and also demonstrates that it is possible to obtain comparable or even better photovoltaic performance from ¡°green¡± CIS QDs to the toxic cadmium and lead chalcogenides QDs.
ÕâÆªÎÄÕÂÊÇÖÓлª½ÌÊÚ¿ÎÌâ×鹨ÓÚÁ¿×ÓµãÃô»¯Ì«Ñôµç³ØÃô»¯Ì½Ë÷µÄÓÖÒ»Í»ÆÆÐÔ½øÕ¹£¬ÎÄÕÂÉáÆúÁ˾綾µÄCd¡¢PbµÈÔªËØ£¬²ÉÓõͶ¾µÄCuInS2ΪÃô»¯¼Á£¬Í¨¹ýZn½»»»µÄ·½Ê½¸ÄÉÆÁËµç³ØÎȶ¨ÐÔ¡¢µç×ÓÔÙ¸½ºÏ£¬²¢Ìáµ½µç³ØÐÔÄܵ½ÁËͬÀàµç³ØµÄ×î¸ßˮƽ¡£>7.04%JACS¿¯µÇ ÖÓлª½ÌÊÚÁ¿×ÓµãÌ«ÑôÄÜµç³ØµÄ×îнøÕ¹CuInS2-QDSCs
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  • ¸½¼þ 1 : 2014-JACS-Zhongxinhua_ZnCuInS_QDSCs.pdf
  • 2014-05-31 09:46:04, 715.37 K

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