2017
DOI: 10.1002/aenm.201700855
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Reducing Voltage Losses in Cascade Organic Solar Cells while Maintaining High External Quantum Efficiencies

Abstract: High photon energy losses limit the open‐circuit voltage (VOC) and power conversion efficiency of organic solar cells (OSCs). In this work, an optimization route is presented which increases the VOC by reducing the interfacial area between donor (D) and acceptor (A). This optimization route concerns a cascade device architecture in which the introduction of discontinuous interlayers between alpha‐sexithiophene (α‐6T) (D) and chloroboron subnaphthalocyanine (SubNc) (A) increases the VOC of an α‐6T/SubNc/SubPc f… Show more

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Cited by 135 publications
(119 citation statements)
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“…inserted rubrene as an interlayer between the alpha‐sexithiophene (α‐6T)/Cl‐Cl n BsubNc layers in an α‐6T/Cl‐Cl n BsubNc/Cl‐BsubPc device developed by Cnops et al . (discussed in next section) . The insertion did successfully achieve their goal of improving the V OC , and it also slightly increases the BsubNc contribution to photocurrent.…”
Section: Boron Subphthalocyaninesmentioning
confidence: 84%
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“…inserted rubrene as an interlayer between the alpha‐sexithiophene (α‐6T)/Cl‐Cl n BsubNc layers in an α‐6T/Cl‐Cl n BsubNc/Cl‐BsubPc device developed by Cnops et al . (discussed in next section) . The insertion did successfully achieve their goal of improving the V OC , and it also slightly increases the BsubNc contribution to photocurrent.…”
Section: Boron Subphthalocyaninesmentioning
confidence: 84%
“…In 2014, Cnops et al . demonstrated the validity and high performance of a three‐layer energy cascade device architecture (Figure ), which became the basis of several follow‐up studies . Cl‐Cl n BsubNc and Cl‐BsubPc were applied as dual electron acceptors paired with α‐6T, whereby exciton dissociation follows a two‐step process.…”
Section: Boron Subphthalocyaninesmentioning
confidence: 93%
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“…[24][25][26][27][28][29][30][31] Moreover, compared to the fullerene-based devices, NF-SMAs based PSCs generally exhibit lower energy loss (E loss ) owing to the weak driving force for charge separation, leading to more balanced J sc and V oc and high PCE. [32][33][34][35][36] Recently, the PCE of NF-SMAs based binary PSCs has reached more than 14% with proper pair of polymer donors/NF-SMAs and device optimizaion. [37,38] Among various types of NF-SMAs, planar and linear acceptor-donor-acceptor (A-D-A) type NF-SMAs have aroused great interest and became the most successful design strategy for high performance NF-SMAs.…”
Section: Introductionmentioning
confidence: 99%