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  • Lin, BaojunXi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (author)

Balancing the pre-aggregation and crystallization kinetics enables high efficiency slot-die coated organic solar cells with reduced non-radiative recombination losses

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020
  • Royal Society of Chemistry (RSC),2020
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-282286
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-282286URI
  • https://doi.org/10.1039/d0ee00774aDOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20201007
  • Slot-die coating being compatible with the roll-to-roll technique has been regarded as a promising tool for upscaling the manufacturing of organic solar cells (OSCs). However, there has been a significant gap between the efficiencies of the state-of-the-art spin-coated devices and the scalable processed devices. The active layer morphology is crucial to achieve high efficiency in OSCs, which depends on the conditions of film fabrication. To figure out and optimize the slot-die coating process, a deeper understanding of the film formation kinetics is important. Herein, in situ measurements of the slot-die coating process based on the PM7:IT4F system are demonstrated to illustrate the aggregation and crystallization evolution at various die temperatures and substrate temperatures. OSCs with a high power conversion efficiency of 13.2% are achieved at 60 degrees C die temperature/60 degrees C substrate temperature due to the improved exciton dissociation, charge transport and suppressed non-radiative charge recombination. The optimized morphology is attributed to the balanced polymer pre-aggregation and small molecule crystallization kinetics. The unsuitable die temperature leads to overlarge phase separation and consequently inefficient exciton dissociation while the improper substrate temperature results in weak crystallization and the following shrunken carrier lifetime with strong non-radiative combination. This work provides fundamental understanding on the correlations among processing methodology, solution pre-aggregation, morphology formation kinetics, device physics and device performance and affords guidance for device optimization in scalable manufacturing.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Zhou, XiaoboXi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (author)
  • Zhao, HengXi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (author)
  • Yuan, JianXi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (author)
  • Zhou, KeXi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (author)
  • Chen, KaiXi An Jiao Tong Univ, Coll Pharm, Xian 710049, Peoples R China. (author)
  • Wu, HongboDonghua Univ, Coll Mat Sci & Engn, Ctr Adv Low Dimens Mat, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China. (author)
  • Guo, RenjunTech Univ Munich, Phys Dept, Lehrstuhl Funkt Mat, James Franck Str 1, D-85748 Garching, Germany. (author)
  • Scheel, Manuel A.Tech Univ Munich, Phys Dept, Lehrstuhl Funkt Mat, James Franck Str 1, D-85748 Garching, Germany. (author)
  • Chumakov, AndreiDeutsch Elektronen Synchrotron DESY, D-22607 Hamburg, Germany. (author)
  • Roth, Stephan V.KTH,Fiber- och polymerteknologi,Deutsch Elektronen Synchrotron DESY, D-22607 Hamburg, Germany.(Swepub:kth)u1b0mjzr (author)
  • Mao, YiminNIST, Ctr Neutron Res, 100 Bur Dr, Gaithersburg, MD 20899 USA. (author)
  • Wang, LailiXi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China. (author)
  • Tang, ZhengDonghua Univ, Coll Mat Sci & Engn, Ctr Adv Low Dimens Mat, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China. (author)
  • Mueller-Buschbaum, PeterTech Univ Munich, Phys Dept, Lehrstuhl Funkt Mat, James Franck Str 1, D-85748 Garching, Germany.;Tech Univ Munich, Heinz Maier Leibnitz Zentrum MLZ, Lichtenbergstr 1, D-85748 Garching, Germany. (author)
  • Ma, WeiXi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (author)
  • Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.Xi An Jiao Tong Univ, Coll Pharm, Xian 710049, Peoples R China. (creator_code:org_t)

Related titles

  • In:Energy & Environmental Science: Royal Society of Chemistry (RSC)13:8, s. 2467-24791754-56921754-5706

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