Self‐Organization of Polymer Additive, Poly(2‐vinylpyridine) via One‐Step Solution Processing to Enhance the Efficiency and Stability of Polymer Solar Cells

Cited 27 time in webofscience Cited 0 time in scopus
  • Hit : 239
  • Download : 0
Interfaces between the photoactive layers and electrodes play critical roles in controlling the performance of optoelectronic devices. Herein, a novel nonconjugated polymer additive (nPA), poly(2-vinylpyridine) (P2VP), is reported for modifying the interfaces between the bulk-heterojunction (BHJ) and cathode/metal oxide (MO) layers. The P2VP nPA enables remarkably enhanced power conversion efficiencies (PCEs) and ambient stability in different types of polymer solar cells (PSCs). Importantly, interfacial engineering can be achieved during deposition of the P2VP nPA-containing BHJ active layer via simple, one-step solution processing. The P2VP nPA has much higher surface energy than the BHJ active components and stronger interaction with the surface of MO, which affords spontaneous vertical phase separation from the BHJ layer on the MO surface by one-step solution processing. The self-assembled P2VP layer substantially reduces the work function and surface defect density of MO, thereby minimizing the charge-extraction barrier and increasing the PCEs of the PSCs significantly, i.e., PTB7-Th: PC71BM (10.53%-> 11.14%), PTB7:PC71BM (7.37%-> 8.67%), and PTB7-Th:P(NDI2HD-T) all-PSCs (5.52%-> 6.14%). In addition, the lifetimes of the PSCs are greatly improved by the use of the P2VP nPA.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2017-09
Language
English
Article Type
Article
Citation

ADVANCED ENERGY MATERIALS, v.7, no.17, pp.1602812

ISSN
1614-6832
DOI
10.1002/aenm.201602812
URI
http://hdl.handle.net/10203/237723
Appears in Collection
EEW-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 27 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0