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10.1038/ncomms14962 http://scihub22266oqcxt.onion/10.1038/ncomms14962 C5384214!5384214!28382945     free     free     free       Nat+Commun 2017 ; 8 (ä): ä Nephropedia Template TP {{tp|p=28382945|t=2017. Two-step photon up-conversion solar cells |pdf=|usr=}}{{28382945}} gab.com Text Two-step photon up-conversion solar cells JO: Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=28382945 #FOAvip Reducing the transmission loss for below-gap photons is a straightforward way to break the limit of the energy-conversion efficiency of solar cells (SCs). The up-conversion of below-gap photons is very promising for generating additional photocurrent. Here we propose a two-step photon up-conversion SC with a hetero-interface comprising different bandgaps of Al0.3Ga0.7As and GaAs. The below-gap photons for Al0.3Ga0.7As excite GaAs and generate electrons at the hetero-interface. The accumulated electrons at the hetero-interface are pumped upwards into the Al0.3Ga0.7As barrier by below-gap photons for GaAs. Efficient two-step photon up-conversion is achieved by introducing InAs quantum dots at the hetero-interface. We observe not only a dramatic increase in the additional photocurrent, which exceeds the reported values by approximately two orders of magnitude, but also an increase in the photovoltage. These results suggest that the two-step photon up-conversion SC has a high potential for implementation in the next-generation high-efficiency SCs. Twit Text FOAVip Two-step photon up-conversion solar cells ????Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=28382945 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=28382945 #FOAvip English Wikipedia <ref>{{Cite pmid|28382945}}</ref> Two-step photon up-conversion solar cells #MMPMID28382945 Asahi S; Teranishi H; Kusaki K; Kaizu T; Kita T Nat Commun 2017[]; 8 (ä): ä PMID28382945show ga Reducing the transmission loss for below-gap photons is a straightforward way to break the limit of the energy-conversion efficiency of solar cells (SCs). The up-conversion of below-gap photons is very promising for generating additional photocurrent. Here we propose a two-step photon up-conversion SC with a hetero-interface comprising different bandgaps of Al0.3Ga0.7As and GaAs. The below-gap photons for Al0.3Ga0.7As excite GaAs and generate electrons at the hetero-interface. The accumulated electrons at the hetero-interface are pumped upwards into the Al0.3Ga0.7As barrier by below-gap photons for GaAs. Efficient two-step photon up-conversion is achieved by introducing InAs quantum dots at the hetero-interface. We observe not only a dramatic increase in the additional photocurrent, which exceeds the reported values by approximately two orders of magnitude, but also an increase in the photovoltage. These results suggest that the two-step photon up-conversion SC has a high potential for implementation in the next-generation high-efficiency SCs. äTwo-step photon up-conversion solar cells (epmc).pdf DeepDyve Pubget Overpricing