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The key advantage of using vertically aligned one-dimensional (1-D) metal oxide nanostructures as A component for the hybrid devices is the capability to provide direct and stable pathways for the transport of photogenerated electrons toward the collection electrode. The bulk heterojunction with vertically aligned 1-D nanochannels for electron transportation has been regarded as an ideal structure for polymer-based solar cells. ZnO has recently been of great interest in the preparation of such aligned 1-D structures for this purpose, due to its high electron mobility and easy availability at low temperature by controllable synthesis. The aligned ZnO nanorod arrays prepared by hydrothermal reaction have normally been used for hybrid polymer/ZnO solar cells, but the power conversion efficiency (¦Ç)of0.2 0.5% is not high yet. The hydrothermal method generally produces ZnO nanostructures containing many deep level defects, which will significantly influence the transport of photogenerated charges toward the collection electrode by trapping/detrapping electrons. In contrast, the ZnO nanostructures synthesized by electrodeposition contain much less defects, offering a low-temperature technique for the low-cost growth of high quality ZnO crystals. Very recently, Atienzar and co-workers showed the first application of the electrodeposited ZnO nanorod arrays for hybrid polymer/ZnO solar cell devices with an efficiency of ¦Ç 0.025% under AM 1.5 illumination. Even though dramatic improvements have been achieved on the device construction and processing of the photoactive layer of polymer/ZnO nanorod array devices, the relationship between the intrinsic property of ZnO nanorods and the device performance, which is crucially important for improving cell performance, still remains unclear. |
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sltmac
ÈÙÓþ°æÖ÷ (ÖªÃû×÷¼Ò)
- ·ÒëEPI: 161
- Ó¦Öú: 10 (Ó×¶ùÔ°)
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yanjiao12(½ð±Ò+30, ·ÒëEPI+1): Ì«ºÃÁË£¬Ð»Ð» 2011-07-12 15:39:24
yanjiao12(½ð±Ò+30): 2011-07-12 19:50:40
yanjiao12(½ð±Ò+30): 2011-07-12 19:50:40
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The key advantage of using vertically aligned one-dimensional (1-D) metal oxide nanostructures as A component for the hybrid devices is the capability to provide direct and stable pathways for the transport of photogenerated electrons toward the collection electrode. ʹÓô¹Ö±Õë״һά£¨1-D£©½ðÊôÑõ»¯ÎïÄÉÃ׽ṹ²ÄÁÏ×÷Ϊ¹¹³É¸´ºÏÆ÷¼þA×é·ÖµÄÍ»³öÓÅÊÆÔÚÓÚËü¿ÉÒÔÌá¹©ÃæÏò¼¯µç»·µÄ¹âÖµç×ÓÊäËÍ·¾¶¡£ The bulk heterojunction with vertically aligned 1-D nanochannels for electron transportation has been regarded as an ideal structure for polymer-based solar cells. ZnO has recently been of great interest in the preparation of such aligned 1-D structures for this purpose, due to its high electron mobility and easy availability at low temperature by controllable synthesis. ÓÃÀ´ÊäË͵ç×ÓµÄÓÉ´¹Ö±Õë״һάÄÉÃ׹ܵÀ¹¹³ÉµÄÌåÒìÖʽá²ÄÁϱ»ÈÏΪÊÇÖÆ±¸¾ÛºÏÎï»ùÌ«ÑôÄÜµç³ØµÄÀíÏë²ÄÁÏ¡£ÎªÁË´ïµ½´ËÄ¿µÄ£¬ÓÃZnOÀ´ÖƱ¸ÕâÖÖÕë״һά½á¹¹²ÄÁϽüÀ´ÒýÆðÁËÈËÃǹ㷺µÄÐËȤ£¬ÕâÊÇÓÉÓÚZnOµÄ¸ßµç×ÓÇ¨ÒÆÂÊÒÔ¼°ÆäÔÚµÍÎÂϵĿɿغϳɡ£ The aligned ZnO nanorod arrays prepared by hydrothermal reaction have normally been used for hybrid polymer/ZnO solar cells, but the power conversion efficiency (¦Ç)of0.2 0.5% is not high yet. ͨ³£ÓÃÀ´ÖƱ¸¾ÛºÏÎï/ZnO¸´ºÏÌ«ÑôÄÜµç³ØµÄµÄZnOÄÉÃ×°ôÕóÁÐÊÇͨ¹ýË®ÈÈ·´Ó¦ºÏ³ÉµÄ£¬µ«ËüµÄ¹âµçת»»Ð§Âʲ»¸ß£¬½öΪ0.5%¡£ The hydrothermal method generally produces ZnO nanostructures containing many deep level defects, which will significantly influence the transport of photogenerated charges toward the collection electrode by trapping/detrapping electrons. Ë®ÈÈ·¨ÖƱ¸ZnOÄÉÃײÄÁÏ»áÐγɺܶàÉî²ã´ÎµÄȱÏÝ£¬Õâ»áÔںܴó³Ì¶ÈÉÏͨ¹ý²¶»ñ/Êͷŵç×Ó¹ý³ÌÓ°Ïìµ½¹âÖµçºÉµÄÇ¨ÒÆ¡£ In contrast, the ZnO nanostructures synthesized by electrodeposition contain much less defects, offering a low-temperature technique for the low-cost growth of high quality ZnO crystals. Ïà±È֮ϣ¬Í¨¹ýµç³Á»ý·¨ºÏ³ÉZnOÄÉÃ׽ṹ²ÄÁÏÐγɵÄȱÏݾͺÜÉÙ£¬Õâ¾ÍÌṩÁËÒ»ÖÖµÍεͳɱ¾ÏÂÉú³¤¸ßÆ·ÖÊZnO¾§ÌåµÄ·½·¨¡£ Very recently, Atienzar and co-workers showed the first application of the electrodeposited ZnO nanorod arrays for hybrid polymer/ZnO solar cell devices with an efficiency of ¦Ç 0.025% under AM 1.5 illumination. ½üÀ´£¬Atienzar¼°ÆäͬÊÂÃǵÚÒ»´ÎÓõç³Á»ý·¨ºÏ³ÉµÄZnOÄÉÃ×°ôÕóÁÐÖÆ±¸ÁËÔÚAM1.5¹âÕÕÉäÏÂЧÂʿɴï0.025%µÄ¾ÛºÏÎï/ZnOÌ«ÑôÄÜµç³ØÆ÷¼þ¡£ Even though dramatic improvements have been achieved on the device construction and processing of the photoactive layer of polymer/ZnO nanorod array devices,the relationship between the intrinsic property of ZnO nanorods and the device performance, which is crucially important for improving cell performance, still remains unclear. ¾¡¹ÜÔÚÆ÷¼þ½á¹¹ºÍ¾ÛºÏÎï/ZnOÄÉÃ×°ôÕóÁÐÐÎ³ÉÆ÷¼þµÄ¹âÃô²ãµÄ¼Ó¹¤¹¤ÒÕÉ϶¼È¡µÃÁ˺ܴóµÄ·¢Õ¹£¬µ«ÊÇ£¬ÓÐÒ»µã¶ÔÌá¸ßµç³ØÐÔÄÜÊǺÜÖØÒªµÄ£¬¾ÍÊÇZnOÄÉÃ×°ôµÄ¹ÌÓÐÐÔÖÊºÍÆ÷¼þÐÔÄÜÖ®¼äÓÉʲô¹ØÏµ£¿ÕâÈÔÈ»Ðü¶øÎ´½â¡£ |

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