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A low band gap acceptor‐donor‐acceptor (A‐D‐A) small molecule donor material, named DR3TDTN, has been designed and synthesized for solution‐processed organic solar cells. DR3TDTN shows narrow optical band gap with value of 1.49 eV and broad absorption spectrum from 300 to 820 nm. The HOMO and LUMO energy levels of DR3TDTN are −4.74 and −3.26 eV, respectively. The optimized photovoltaic device based...
With the goal of increasing the open-circuit voltage, two new solution-processable A–D–A structure small molecule donor materials, named DCAO3TF and DCAO3TCz, using two weak electron-donating units, fluorene and carbazole as the central block have been designed and synthesized for photovoltaic applications. While bulk heterojunction photovoltaic devices based on DCAO3TF:PC 61 BM and DCAO3TCz:PC...
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