Fig. 1From: Selective Soxhlets extraction to enhance solubility of newly-synthesized poly(indoloindole-selenophene vinylene selenophene) donor for photovoltaic applicationsa Image of solubility change due to Soxhlet solvent and device structure of P-IDI-SVS:PC70BM BHJ solar cell. b Energy level diagram of the organic solar cellBack to article page