Acceptor–Donor–Acceptor Oligomers Containing Dithieno[3,2-b:2′,3′-d]pyrrole and Thieno[2,3-c]pyrrole-4,6-dione Units for Solution-Processed Organic Solar Cells

Mercier, Lauren G.; Mishra, Amaresh; Ishigaki, Yusuke; Henne, Florian D.; Schulz, Gisela L.; Bäuerle, Peter

doi:10.1021/ol500809e

Cited by 32 publications

(19 citation statements)

References 24 publications

(52 reference statements)

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“…In the past few years, solution‐processed small molecule donor bulk heterojunction (BHJ) solar cells have made remarkable progress with power conversion efficiencies (PCEs) up to 8% . These impressive PCEs have all been achieved using a fullerene derivative as the electron acceptor.…”

Section: Introductionmentioning

confidence: 99%

Competitive Absorption and Inefficient Exciton Harvesting: Lessons Learned from Bulk Heterojunction Organic Photovoltaics Utilizing the Polymer Acceptor P(NDI2OD‐T2)

Lin

Phan

et al. 2014

Adv Funct Materials

139

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Organic solar cells utilizing the small molecule donor 7,7′‐(4,4‐bis(2‐ethylhexyl)‐4H‐silolo[3,2‐b:4,5‐b′]dithiophene‐2,6‐diyl)bis(6‐fluoro‐4‐(5′‐hexyl‐[2,2′‐bithiophen]‐5‐yl)benzo[c][1,2,5] thiadiazole) (p‐DTS(FBTTh2)2 and the polymer acceptor poly{[N,N′‐bis(2‐octyldodecyl)‐1,4,5,8‐naphthalenedicarboximide‐2,6‐diyl]‐alt‐5,5′‐(2,2′‐bithiophene)}(P(NDI2OD‐T2)) are investigated and a power conversion efficiency of 2.1% is achieved. By systematic study of bulk heterojunction (BHJ) organic photovoltaic (OPV) quantum efficiency, film morphology, charge transport and extraction and exciton diffusion, the loss processes in this blend is revealed compared to the blend of [6,6]‐phenyl‐C71‐butyric acid methyl ester (PC71BM) and the same donor. An exciton diffussion study using Förster resonant energy transfer (FRET) shows the upper limit of the P(NDI2OD‐T2) exciton diffusion length to be only 1.1 nm. The extremely low exciton diffusion length of P(NDI2OD‐T2), in combination with the overlap in donor and acceptor absorption, is then found to significantly limit device performance. These results suggest that BHJ OPV devices utilizing P(NDI2OD‐T2) as an acceptor material will likely be limited by its low exciton diffusion length compared to devices utilizing functionalized fullerene acceptors, especially when P(NDI2OD‐T2) significantly competes with the donor molecule for photon absorption.

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Section: Introductionmentioning

confidence: 99%

Competitive Absorption and Inefficient Exciton Harvesting: Lessons Learned from Bulk Heterojunction Organic Photovoltaics Utilizing the Polymer Acceptor P(NDI2OD‐T2)

Lin

Phan

et al. 2014

Adv Funct Materials

139

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“…Both 6a-b exhibited low lying HOMO (-5. value of 6a compared to 6b were due to face on orientation of crystallite leading to high SCLC hole mobility that affect the PCE. [32] . 7a and 7b blend with PC71BM (2:3, w/w) DIO as additive shows PCE of 1.2 % and 2.6 % respectively compared to 0.4 % and 2.2 % respectively without DIO additives.…”

Section: Fig4: Small Moleculementioning

confidence: 99%

A Review on the Thieno [2,3-c]pyrrole-4,6-dione-based small molecules for Organic Photovoltaic Cells

Khairuddin¹,

Sarjadi²

2017

IJAERS

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“…Conversely, quite a number of research in this area emphasized on production and processing of OSC (Chen et al, 2014a(Chen et al, , 2014b(Chen et al, , 2014c(Chen et al, , 2014dArrechea et al, 2015;Bagde et al, 2015Bagde et al, , 2016Ciro et al, 2017;Bai et al, 2014aBai et al, , 2014bKim et al, 2014Kim et al, , 2015Kim et al, , 2013Kan et al, 2014;Du et al, 2015;Lim et al, 2016;Mercier et al, 2014;Ni et al, 2014Ni et al, , 2015Yang et al, 2014Yang et al, , 2016Yang et al, , 2015aYang et al, , 2015bNarayanaswamy et al, 2016). Some focused on solution processed bulk heterojunction solar cells (Do et al, 2015;Dutta et al, 2012dDutta et al, , 2012bDutta et al, , 2012cKumar et al, 2015;Sharma et al, 2014;Liang et al, 2016;Lim et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of organic solar cells

Uyanga

Okwu

Adeoye

et al. 2018

WJE

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Purpose The study aims to carry out the production of a bulk heterojunction organic solar cell in a laboratory scale using a blend of poly (3-hexylthiopene) (P3HT) and [6, 6]-phenyl (C61) butyric acid methyl ether (PCBM). Design/methodology/approach Four inverted geometry organic solar cells were prepared based on 1:1 ratio of P3HT to PCBM and subjected to post annealing at different temperatures of 32, 120, 130 and 140°C. Solar cells were fabricated with structure glass/ITO/P3HT:PCBM/PEDOT:PSS/Au and characterized using Keithley 2400 series sourcemeter and a multimeter interfaced to a computer system with a LabVIEW software, which showed both dark and illumination current–voltage characteristic curves. Four reference cells were also fabricated with structure soda lime glass/P3HT:PCBM and annealed at different temperatures of 32, 120, 130 and 140°C. Findings The third organic solar cell prepared, Sample CITO, had the best performance with power conversion efficiency (PCE) of 2.0281 per cent, fill factor (FF) of 0.392, short circuit current of −0.0133 A and open circuit voltage of 0.389 V. Annealing of active layer was found to improve cell morphology, FF and PCE. Annealing of the active layer at 140°C resulted in a decrease of the PCE to 2.01 per cent. Research limitations/implications These findings are in good agreement with previous investigation in literature which reported that best annealing temperature for a 1:1 ratio blend of active material is 130°C. Ultraviolet–visible spectra on reference cells showed that sample CITO had wider absorption spectra with peak absorbance at a wavelength of 508 nm. Originality/value This research is purely original.

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Acceptor–Donor–Acceptor Oligomers Containing Dithieno[3,2-b:2′,3′-d]pyrrole and Thieno[2,3-c]pyrrole-4,6-dione Units for Solution-Processed Organic Solar Cells

Cited by 32 publications

References 24 publications

Competitive Absorption and Inefficient Exciton Harvesting: Lessons Learned from Bulk Heterojunction Organic Photovoltaics Utilizing the Polymer Acceptor P(NDI2OD‐T2)

Competitive Absorption and Inefficient Exciton Harvesting: Lessons Learned from Bulk Heterojunction Organic Photovoltaics Utilizing the Polymer Acceptor P(NDI2OD‐T2)

A Review on the Thieno [2,3-c]pyrrole-4,6-dione-based small molecules for Organic Photovoltaic Cells

Production and characterization of organic solar cells

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