Charge-carrier selective electrodes for organic bulk heterojunction solar cell by contact-printed siloxane oligomers

Hyun Sik Hwang, Dahl-Young Khang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

'Smart' (or selective) electrode for charge carriers, both electrons and holes, in organic bulk-heterojunction (BHJ) solar cells using insertion layers made of hydrophobically-recovered and contact-printed siloxane oligomers between electrodes and active material has been demonstrated. The siloxane oligomer insertion layer has been formed at a given interface simply by conformally-contacting a cured slab of polydimethylsiloxane stamp for less than 100 s. All the devices, either siloxane oligomer printed at one interface only or printed at both interfaces, showed efficiency enhancement when compared to non-printed ones. The possible mechanism that is responsible for the observed efficiency enhancement has been discussed based on the point of optimum symmetry and photocurrent analysis. Besides its simplicity and large-area applicability, the demonstrated contact-printing technique does not involve any vacuum or wet processing steps and thus can be very useful for the roll-based, continuous production scheme for organic BHJ solar cells.

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalThin Solid Films
Volume589
DOIs
Publication statusPublished - 2015 Aug 31

Fingerprint

Siloxanes
siloxanes
Charge carriers
oligomers
Oligomers
Heterojunctions
heterojunctions
charge carriers
Solar cells
solar cells
Electrodes
electrodes
insertion
augmentation
Polydimethylsiloxane
Photocurrents
printing
photocurrents
Printing
slabs

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

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abstract = "'Smart' (or selective) electrode for charge carriers, both electrons and holes, in organic bulk-heterojunction (BHJ) solar cells using insertion layers made of hydrophobically-recovered and contact-printed siloxane oligomers between electrodes and active material has been demonstrated. The siloxane oligomer insertion layer has been formed at a given interface simply by conformally-contacting a cured slab of polydimethylsiloxane stamp for less than 100 s. All the devices, either siloxane oligomer printed at one interface only or printed at both interfaces, showed efficiency enhancement when compared to non-printed ones. The possible mechanism that is responsible for the observed efficiency enhancement has been discussed based on the point of optimum symmetry and photocurrent analysis. Besides its simplicity and large-area applicability, the demonstrated contact-printing technique does not involve any vacuum or wet processing steps and thus can be very useful for the roll-based, continuous production scheme for organic BHJ solar cells.",
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Charge-carrier selective electrodes for organic bulk heterojunction solar cell by contact-printed siloxane oligomers. / Hwang, Hyun Sik; Khang, Dahl-Young.

In: Thin Solid Films, Vol. 589, 31.08.2015, p. 125-132.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Hwang, Hyun Sik

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