On the efficiency of polymer solar cells

Wong, Wai Yeung; Wang, Xingzhu; He, Ze; Djurišić, Aleksandra B.; Yip, Cho Tung; Cheung, Kmc; Wang, Hai; Mak, Chris S. K.; Chan, Wai Kin

doi:10.1038/nmat2017b

Cited by 160 publications

(255 citation statements)

References 7 publications

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“…8) and PCBM were reported with an efficiency of 4.2% (AM1.5 corrected for the spectral mismatch). The external and internal quantum efficiencies [65] of these devices was found to have maximum values close to 60% and 75%, respectively, although the good performance of this polymer is mainly attributed to the high V oc of $1 V, which [69], and 6) platinum(II) polyyne polymer [70]. 7) and 8) are PCBM and P3HT, repectively.…”

Section: Fluorene-based Copolymersmentioning

confidence: 91%

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Polymer‐Fullerene Bulk‐Heterojunction Solar Cells

Dennler¹,

Scharber²,

Brabec³

2009

Advanced Materials

3,108

2,461

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Solution‐processed bulk‐heterojunction solar cells have gained serious attention during the last few years and are becoming established as one of the future photovoltaic technologies for low‐cost power production. This article reviews the highlights of the last few years, and summarizes today's state‐of‐the‐art performance. An outlook is given on relevant future materials and technologies that have the potential to guide this young photovoltaic technology towards the magic 10% regime. A cost model supplements the technical discussions, with practical aspects any photovoltaic technology needs to fulfil, and answers to the question as to whether low module costs can compensate lower lifetimes and performances.

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Section: Fluorene-based Copolymersmentioning

confidence: 91%

“…[65][66][67][68][69][70] Most of the structures are from the material classes of thiophene, fluorene, carbazole, and cyclopentadithiophene based copolymers. In addition, one typical low-band-gap polymer and a metallated conjugated polymer are discussed.…”

Section: Promising Donor Materialsmentioning

confidence: 99%

Polymer‐Fullerene Bulk‐Heterojunction Solar Cells

Dennler¹,

Scharber²,

Brabec³

2009

Advanced Materials

3,108

2,461

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“…[12,[15][16][17][18][19][20][21] For instance, rate constants (kct, subscript ct stands for charge transfer; it can be turned into subscripts cs and cr standing for charge separation and charge recombination, respectively) for photoinduced charge transfer (CT) reactions occurring in P3HT-PCBM reveal the potential of such materials in the construction of efficient DSSCs. Based on quantum chemistry methods, these kct have been demonstrated [22] to be tunable by a few parameters so that the power conversion efficiency may be increased; [23][24][25] which highlights, in fact, the importance of theoretical developments for the understanding and design of DSSCs with improved efficiency. [26] At the molecular level, blends such as P3HT-PCBM are classified into the so called bulk heterojunctions [27] (BHJs), where the donor and acceptor moieties are not covalently connected, and molecular heterojunctions [28] (mHJs) with covalently linked donor and acceptor.…”

Section: Introductionmentioning

confidence: 99%

Theoretical estimation of the rate of photoinduced charge transfer reactions in triphenylamine C₆₀ donor–acceptor conjugate

2016

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Fullerene based molecular heterojunctions such as the [6,6]-pyrrolidine-C60 donor-acceptor conjugate containing triphenylamine (TPA) are potential materials for high-efficient dye-sensitized solar cells. In this work, we estimate the rate constants for the photoinduced charge separation and charge recombination processes in TPA-C60 using the unrestricted and time-dependent DFT methods. Different schemes are applied to evaluate excited state properties and electron transfer parameters (reorganization energies, electronic couplings, and Gibbs energies). The use of open-shell singlet or triplet states, several density functionals and continuum solvation models is discussed. Strengths and limitations of the computational approaches are highlighted. The present benchmark study provides an overview of the expected performance of DFT-based methodologies in the description of photoinduced charge transfer reactions in fullerene heterojunctions.2

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“…炔烃聚合物发现较早, 能带隙较宽, 苯并噻二唑与炔烃的的聚合物, 再与金属铂键合作为太阳能电池给体材料也有报道, 如聚合物 46 [58] 和 47 [59] , 与受体材料 PC 71 BM 制备的太阳能电池器件的能量转换效率均达到 4%以上, 苯并噻二唑基团的引入很好的调节了该类含金属聚合物材料能带隙, 为有机金属聚合物在太阳能电池方面的应用提供了很好的发展方向(Chart 27). …”

Section: 基于苯并噻二唑和炔烃的共轭聚合物unclassified