We　investigate　the　influence　of　particle　plasmons　on　exciton　and　charge　generation　and　recombination　processes　in　the　blend　of　poly　(9-(1-octylnonyl)-9H-carbazole-benzothiadiazole-4,7-diyl-2,5-thiophenediyl)　(PCDTBT)　and　[6,6]-phenyl-C(70)butyric　acid　methyl　ester　(PC70BM).　The　particle　plasmons　are　generated　from　gold　nanoparticles,　which　are　embedded　into　PCDTBT:PC70BM　blend.　For　the　blend　with　gold　nanoparticles,　we　observe　enhance　light　harvesting.　Despite　the　enhanced　light　collection,　we　find　that　the　quasi-steady-state　charge　generation　has　not　been　influenced　by　the　particle　plasmons.　However,　the　generation　and　recombination　of　long-lived　(sub-millisecond)　polaron　paris　have　been　significantly　enhanced:　from　untrapped　state　in　the　pristine　blend　to　the　trapped　state　in　the　gold　nanoparticle-embedded　blend.　This　result　implies　that　the　plasmon-influenced　polarons　are　trapped　at　the　broadband　geminate　polaron　pair　(GPP)　state.　This　state　acts　as　an　intermediate　state,　which　either　leads　to　the　formation　of　charge　transfer　excitons　(CTXs)　or　free　charge　carriers.　In　our　case,　the　particle　plasmon-influenced　polarons　are　trapped　in　the　GPP　state,　which　leads　to　the　formation　of　CTXs.　For　this　reason,　we　do　not　observe　the　enhanced　charge　generation　in　PCDTBT:PC70BM　blend　with　particle　plasmon　resonance.　Finally,　we　revealed　that　the　long-lived　polarons　mainly　resulted　from　the　localization　by　particle　plasmons.　The　macroscopic　modification　in　the　blend　film　made　negligible　contributions　to　this　influence.　(c)　2017　Wiley　Periodicals,　Inc.　J.　Polym.　Sci.,　Part　B:　Polym.　Phys.　2017,　55,　940-947