Investigation of the property change of polymer solar cells by changing counter anions in polyviologen as a cathode buffer layer

Trang, Thu; Hong, Hee Seob; Ha, Ye Eun; Park, Chan-Young; Kim, Joo Hyun

doi:10.1007/s13233-015-3011-7

Cited by 11 publications

(2 citation statements)

References 38 publications

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“…Among these, interfacial property is strongly related with the charge collection property, which is very important parameter to get high performance PSCs through enhancement of the short circuit current ( J sc ) of the devices. For the cathode interface, π‐conjugated oligo‐ or polymer electrolytes have been mainly used for cathode buffer layer to achieve high performance devices. Zwitterionic conjugated polymer electrolytes and nonconjugated polar polymers such as poly(4‐vinylpyrirolidone), poly(4‐vinylalcohol), poly(sodium 4‐styrenesulfonate), polyviologen,, and tetra‐ n ‐alkyl ammonium bromides have been applied to PSCs as an interfacial layer (IFL) at the cathode side to improve the efficiency.…”

Section: Introductionmentioning

confidence: 99%

Self‐assembled Poly(4‐vinylpyridine) As an Interfacial Layer for Polymer Solar Cells

Sylvianti

Trang

Marsya

et al. 2015

Bulletin Korean Chem Soc

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A nonconjugated polymer, poly(4‐vinylpyridine) (PVPy), is applied to polymer solar cells (PSCs) as an interfacial layer (IFL) either inverted or conventional type PSCs. The Kelvin probe microscopy measurements support the formation of favorable interface dipole at the cathode interface, indicating the reduction of an electron collection barrier from the active layer to the cathode. Inverted type PSC with PVPy as an IFL demonstrate the power conversion efficiency (PCE) of 3.20%, (open circuit voltage [V oc] = 0.61 V, short circuit current [J sc] = 8.68 mA/cm2, fill factor [FF] = 59.4%), which is better than the device without interlayer (PCE = 2.95%, V oc = 0.60 V, J sc = 8.11 mA/cm2, FF = 60.6%). Most increase in the PCE of the devices with interlayer is resulted from enhancement of the J sc. This is due to that the reduction of an electron collection barrier at the cathode interface. Conventional type PSC with PVPy (3.51%) at the cathode interface also exhibits better the PCE compared to that of the device without interlayer (2.88%).

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Section: Introductionmentioning

confidence: 99%

Self‐assembled Poly(4‐vinylpyridine) As an Interfacial Layer for Polymer Solar Cells

Sylvianti

Trang

Marsya

et al. 2015

Bulletin Korean Chem Soc

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“…Thus, there have been outstanding improvements, with the power conversion efficiency (PCE) reaching up to 13%. These achievements can be accomplished via the synthesis of efficient conjugated polymers/oligomers or through device engineering …”

Section: Introductionmentioning

confidence: 99%

Simple Approach to Overcome Thickness Tolerance of Interlayer without Sacrificing the Performances of Polymer Solar Cells

Jeong

Jin

Moon

et al. 2019

Adv Materials Inter

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Organic Electrolytes Doped ZnO Layer as the Electron Transport Layer for Bulk Heterojunction Polymer Solar Cells

Kim

Maduwu

et al. 2018

Solar RRL

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ZnO layers doped with small molecule viologen derivatives, i.e., 1,1 0 -bis(4hydroxypropyl)-[4,4 0 -bipyridine]-1,1 0 -diium bromide (V─OH) or 1,1 0 -bis(2,3dihydroxypropyl)-[4,4 0 -bipyridine]-1,1 0 -diium bromide (V─2OH), are prepared and used as the electron transport layer in inverted polymer solar cells (iPSCs). The presence of V─OH (or V─2OH) in ZnO layer and the formation of homogeneous V─OH (or V─2OH) doped ZnO layer are confirmed by Xray photoelectron spectroscopy. The electron mobilities of doped ZnO layers are comparable to those of pristine ZnO because the crystallinity of the ZnO layer is not significantly affected by the doping process. Kelvin probe microscopy measurements show that the work function of doped ZnO layers is in the range of À4.2 -À4.3 eV, which is higher than that of pristine ZnO (À4.5 eV). This is due to the formation of interface dipoles at the interface between the ZnO layer and the active layer. The water contact angle data reflect the existence of quaternary ammonium bromide on the surface, and unreacted hydroxyl groups are pointed away from the surface of the ZnO layer. iPSCs based on V─OH doped ZnO and V─2OH doped ZnO exhibit power conversion efficiencies (PCEs) up to 9.0% and 8.6%, which are dramatically enhanced compared to the device based on pristine ZnO (PCE ¼ 7.4%).

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Investigation of the property change of polymer solar cells by changing counter anions in polyviologen as a cathode buffer layer

Cited by 11 publications

References 38 publications

Self‐assembled Poly(4‐vinylpyridine) As an Interfacial Layer for Polymer Solar Cells

Self‐assembled Poly(4‐vinylpyridine) As an Interfacial Layer for Polymer Solar Cells

Simple Approach to Overcome Thickness Tolerance of Interlayer without Sacrificing the Performances of Polymer Solar Cells

Organic Electrolytes Doped ZnO Layer as the Electron Transport Layer for Bulk Heterojunction Polymer Solar Cells

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