@article{Martinez:2014:10.1039/c4nr01679c, author = {Martinez, L and Higuchi, S and MacLachlan, AJ and Stavrinadis, A and Miller, NC and Diedenhofen, SL and Bernechea, M and Sweetnam, S and Nelson, J and Haque, SA and Tajima, K and Konstantatos, G}, doi = {10.1039/c4nr01679c}, journal = {Nanoscale}, pages = {10018--10026}, title = {Improved electronic coupling in hybrid organic-inorganic nanocomposites employing thiol-functionalized P3HT and bismuth sulfide nanocrystals}, url = {http://dx.doi.org/10.1039/c4nr01679c}, volume = {6}, year = {2014} }
TY - JOUR AB - In this study, we employ a thiol-functionalized polymer (P3HT-SH) as a leverage to tailor the nanomorphology and electronic coupling in polymer–nanocrystal composites for hybrid solar cells. The presence of the thiol functional group allows for a highly crystalline semiconducting polymer film at low thiol content and allows for improved nanomorphologies in hybrid organic–inorganic systems when employing non-toxic bismuth sulfide nanocrystals. The exciton dissociation efficiency and carrier dynamics at this hybrid heterojunction are investigated through photoluminescence quenching and transient absorption spectroscopy measurements, revealing a larger degree of polaron formation when P3HT-SH is employed, suggesting an increased electronic interaction between the metal chalcogenide nanocrystals and the thiol-functionalized P3HT. The fabricated photovoltaic devices show 15% higher power conversion efficiencies as a result of the improved nanomorphology and better charge transfer mechanism together with the higher open circuit voltages arising from the deeper energy levels of P3HT-SH. AU - Martinez,L AU - Higuchi,S AU - MacLachlan,AJ AU - Stavrinadis,A AU - Miller,NC AU - Diedenhofen,SL AU - Bernechea,M AU - Sweetnam,S AU - Nelson,J AU - Haque,SA AU - Tajima,K AU - Konstantatos,G DO - 10.1039/c4nr01679c EP - 10026 PY - 2014/// SN - 2040-3372 SP - 10018 TI - Improved electronic coupling in hybrid organic-inorganic nanocomposites employing thiol-functionalized P3HT and bismuth sulfide nanocrystals T2 - Nanoscale UR - http://dx.doi.org/10.1039/c4nr01679c VL - 6 ER -
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