Annealing time effect on the performance of polymer solar cells having active layers doped with hole-transporting material

Shin, Minjung; Kim, Hwajeong; Kim, Youngkyoo

doi:10.1007/s13233-010-0712-9

Cited by 13 publications

(12 citation statements)

References 20 publications

(29 reference statements)

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“…The highest occupied molecular orbital (HOMO) energy of −6.0 eV was obtained after calibration from the measured ionization potential (Figure 1c). [33,34] From the optical bandgap energy (1.3 eV) and HOMO energy (−6.0 eV), the LUMO energy was calculated to −4.7 eV for the PODTPPD-DNT film.…”

Section: Resultsmentioning

confidence: 99%

Light‐Insensitive Organic Field‐Effect Transistors with n‐Type Conjugated Polymers Containing Dinitrothiophene Units

Moon

Lee

Kim

et al. 2018

Adv Elect Materials

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Here, it is reported that organic field‐effect transistors (OFETs) with n‐type conjugated polymer, poly[{2,5‐bis‐(2‐octhyldodecyl)‐3,6‐bis‐(thien‐2‐yl)‐pyrrolo[3,4‐c]pyrrole‐1,4‐diyl}‐co‐{2,2′‐(3,4‐dinitrothiophene)]‐5,5′‐diyl}] (PODTPPD‐DNT), can be operated without large disturbance by surrounding light. The PODTPPD‐DNT polymer synthesized via the Stille coupling reaction could act as a channel layer for n‐channel OFETs. Although the PODTPPD‐DNT polymer shows a broad optical absorption from ultraviolet to near‐infrared parts up to 1000 nm, the OFETs with the PODTPPD‐DNT channel layers do not almost respond to monochromatic (520 and 780 nm) and white light. The reason is assigned to the exciton quenching effect by two nitro groups in the polymer chain. The semitransparent OFETs with the 20 nm thick PODTPPD‐DNT channel layers are also almost light‐insensitive for operation under typical room light conditions.

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Section: Resultsmentioning

confidence: 99%

Light‐Insensitive Organic Field‐Effect Transistors with n‐Type Conjugated Polymers Containing Dinitrothiophene Units

Moon

Lee

Kim

et al. 2018

Adv Elect Materials

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“…The highest occupied molecular orbital (HOMO) energy of the PEHTPPD-BT film was calculated ~5.5 eV after calibration from the photoelectron (PE) yield spectrum (see Fig. 1c ) 33 34 . Then the lowest unoccupied molecular orbital (LUMO) energy of the PEHTPPD-BT film (~4.3 eV) was calculated from both HOMO energy and optical band gap energy (Eg = 1.2 eV) (taken from the onset point of optical absorption spectrum in Fig.…”

Section: Synthesis Energy Band and Nanostructure Of Pehtppd-btmentioning

confidence: 99%

Broadband All-Polymer Phototransistors with Nanostructured Bulk Heterojunction Layers of NIR-Sensing n-Type and Visible Light-Sensing p-Type Polymers

Han

Nam

Seo

et al. 2015

Sci Rep

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We report ‘broadband light-sensing’ all-polymer phototransistors with the nanostructured bulk heterojunction (BHJ) layers of visible (VIS) light-sensing electron-donating (p-type) polymer and near infrared (NIR) light-sensing electron-accepting (n-type) polymer. Poly[{2,5-bis-(2-ethylhexyl)-3,6-bis-(thien-2-yl)-pyrrolo[3,4-c]pyrrole-1,4-diyl}-co-{2,2′-(2,1,3-benzothiadiazole)]-5,5′-diyl}] (PEHTPPD-BT), which is synthesized via Suzuki coupling and employed as the n-type polymer, shows strong optical absorption in the NIR region (up to 1100 nm) in the presence of weak absorption in the VIS range (400 ~ 600 nm). To strengthen the VIS absorption, poly(3-hexylthiophene) (P3HT) is introduced as the p-type polymer. All-polymer phototransistors with the BHJ (P3HT:PEHTPPD-BT) layers, featuring a peculiar nano-domain morphology, exhibit typical p-type transistor characteristics and efficiently detect broadband (VIS ~ NIR) lights. The maximum corrected responsivity (without contribution of dark current) reaches up to 85 ~ 88% (VIS) and 26 ~ 40% (NIR) of theoretical responsivity. The charge separation process between P3HT and PEHTPPD-BT components in the highest occupied molecular orbital is proposed as a major working mechanism for the effective NIR sensing.

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“…[3][4][5][6]10 In particular, it is found that the performance of polymer solar cells greatly depends on the stereochemical regioregularity of P3HT, whereas the end group effect of P3HT was minimal for solar cell applications. 11,12 In the light of electron acceptors, a soluble fullerene, mostly 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6) C61 (PCBM), is widely used for the manufacture of polymer solar cells. [3][4][5][6][7][10][11][12][13] Late studies on P3HT with adding inorganic semiconductor nanoparticles systems exhibit that the efficiency can be improved significantly.…”

Section: Introductionmentioning

confidence: 99%

“…11,12 In the light of electron acceptors, a soluble fullerene, mostly 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6) C61 (PCBM), is widely used for the manufacture of polymer solar cells. [3][4][5][6][7][10][11][12][13] Late studies on P3HT with adding inorganic semiconductor nanoparticles systems exhibit that the efficiency can be improved significantly. [4][5][6][7] However, the efficiency of P3HT directly blending with inorganic particles without fullerene is still much lower than the P3HT/fullerene-based solar cells.…”

Section: Introductionmentioning

confidence: 99%

The performance of polymer solar cells based on P3HT:PCBM after post-annealing and adding titanium dioxide nanoparticles

Chiang

Hsu

2014

Materials Research Innovations

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The polymer solar cell is a promising candidate for the next-generation solar cell because of its light weight, flexibility and easy fabrication. In this manuscript, we report on polymer solar cells based on P3HT: [6,6]-phenyl-C61-butyric acid methyl ester with 1:1 weight ratio blending as active layer. To improve the performance, the TiO 2 nanoparticles were adding to the active layer of the cell. The morphology of the polymer solar cell was improved because of the addition of TiO 2 nanoparticles. The effects of thermal annealing on the solar cell before and after adding TiO 2 nanoparticles blending were studied respectively. Post-annealing shows significant improvement in cell performance whether TiO 2 nanoparticles are added or not. Optimisation of the thermal annealing condition and the adding amount of TiO 2 nanoparticles can efficiently improve the performance of the cell.

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Annealing time effect on the performance of polymer solar cells having active layers doped with hole-transporting material

Cited by 13 publications

References 20 publications

Light‐Insensitive Organic Field‐Effect Transistors with n‐Type Conjugated Polymers Containing Dinitrothiophene Units

Light‐Insensitive Organic Field‐Effect Transistors with n‐Type Conjugated Polymers Containing Dinitrothiophene Units

Broadband All-Polymer Phototransistors with Nanostructured Bulk Heterojunction Layers of NIR-Sensing n-Type and Visible Light-Sensing p-Type Polymers

The performance of polymer solar cells based on P3HT:PCBM after post-annealing and adding titanium dioxide nanoparticles

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