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10.1038/ncomms7501 http://scihub22266oqcxt.onion/10.1038/ncomms7501 C4366531!4366531 !25735188     free     free     free Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=25735188 &cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215       Nat+Commun 2015 ; 6 (?): 6501 Nephropedia Template TP {{tp|p=25735188 |t=2015. Polaron pair mediated triplet generation in polymer/fullerene blends |pdf=|usr=}}{{25735188 }} gab.com Text Polaron pair mediated triplet generation in polymer/fullerene blends JO: Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=25735188 #FOAvip Electron spin is a key consideration for the function of organic semiconductors in light-emitting diodes and solar cells, as well as spintronic applications relying on organic magnetoresistance. A mechanism for triplet excited state generation in such systems is by recombination of electron-hole pairs. However, the exact charge recombination mechanism, whether geminate or nongeminate and whether it involves spin-state mixing is not well understood. In this work, the dynamics of free charge separation competing with recombination to polymer triplet states is studied in two closely related polymer-fullerene blends with differing polymer fluorination and photovoltaic performance. Using time-resolved laser spectroscopic techniques and quantum chemical calculations, we show that lower charge separation in the fluorinated system is associated with the formation of bound electron-hole pairs, which undergo spin-state mixing on the nanosecond timescale and subsequent geminate recombination to triplet excitons. We find that these bound electron-hole pairs can be dissociated by electric fields. Twit Text FOAVip Polaron pair mediated triplet generation in polymer/fullerene blends ????Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=25735188 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=25735188 #FOAvip English Wikipedia <ref>{{Cite pmid|25735188 }}</ref> Polaron pair mediated triplet generation in polymer/fullerene blends #MMPMID25735188 Dimitrov SD ; Wheeler S ; Niedzialek D ; Schroeder BC ; Utzat H ; Frost JM ; Yao J ; Gillett A ; Tuladhar PS ; McCulloch I ; Nelson J ; Durrant JR Nat Commun 2015[Mar]; 6 (?): 6501 PMID25735188 show ga Electron spin is a key consideration for the function of organic semiconductors in light-emitting diodes and solar cells, as well as spintronic applications relying on organic magnetoresistance. A mechanism for triplet excited state generation in such systems is by recombination of electron-hole pairs. However, the exact charge recombination mechanism, whether geminate or nongeminate and whether it involves spin-state mixing is not well understood. In this work, the dynamics of free charge separation competing with recombination to polymer triplet states is studied in two closely related polymer-fullerene blends with differing polymer fluorination and photovoltaic performance. Using time-resolved laser spectroscopic techniques and quantum chemical calculations, we show that lower charge separation in the fluorinated system is associated with the formation of bound electron-hole pairs, which undergo spin-state mixing on the nanosecond timescale and subsequent geminate recombination to triplet excitons. We find that these bound electron-hole pairs can be dissociated by electric fields. ?Polaron pair mediated triplet generation in polymer/fullerene blends (epmc).pdf DeepDyve Pubget Overpricing