Controlling Vertical Morphology within the Active Layer of Organic Photovoltaics Using Poly(3-hexylthiophene) Nanowires and Phenyl-C61-butyric Acid Methyl Ester

ACS Nano ◽  
2011 ◽  
Vol 5 (4) ◽  
pp. 3132-3140 ◽  
Author(s):  
Andrew H. Rice ◽  
Rajiv Giridharagopal ◽  
Sam X. Zheng ◽  
Fumio S. Ohuchi ◽  
David S. Ginger ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Active Layer ◽  
Butyric Acid ◽  
Organic Photovoltaics ◽  
Acid Methyl Ester ◽  
Acid Methyl ◽  
Butyric Acid Methyl Ester

scholarly journals A relatively wide-bandgap and air-stable donor polymer for fabrication of efficient semitransparent and tandem organic photovoltaics

2019 ◽  
Vol 116 (44) ◽  
pp. 22037-22043 ◽  
Author(s):  
Mohammad Mahdi Tavakoli ◽  
Riccardo Po ◽  
Gabriele Bianchi ◽  
Alessandra Cominetti ◽  
Chiara Carbonera ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Butyric Acid ◽  
Organic Photovoltaics ◽  
Acid Methyl Ester ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Monolayer Graphene ◽  
Acid Methyl ◽  
Wide Range ◽  
Butyric Acid Methyl Ester

Organic photovoltaics (OPVs) have attracted tremendous attention in the field of thin-film solar cells due to their wide range of applications, especially for semitransparent devices. Here, we synthesize a dithiaindacenone-thiophene-benzothiadiazole-thiophene alternating donor copolymer named poly{[2,7-(5,5-didecyl-5H-1,8-dithia-as-indacenone)]-alt-[5,5-(5′,6′-dioctyloxy-4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)]} (PDTIDTBT), which shows a relatively wide bandgap of 1.82 eV, good mobility, and high transmittance and ambient stability. In this work, we fabricate an OPV device using monolayer graphene as top electrode. Due to the stability of PDTIDTBT in air and water, we use a wet transfer technique for graphene to fabricate semitransparent OPVs. We demonstrate OPVs based on the PDTIDTBT:Phenyl-C61/71-butyric acid methyl ester (PCBM) blend with maximum power conversion efficiencies (PCEs) of 6.1 and 4.75% using silver and graphene top electrodes, respectively. Our graphene-based device shows a high average visible transmittance (AVT) of 55%, indicating the potential of PDTIDTBT for window application and tandem devices. Therefore, we also demonstrate tandem devices using the PDTIDTBT:Phenyl-C61-butyric acid methyl ester (PC60BM) blend in both series and parallel connections with average PCEs of 7.3 and 7.95%, respectively. We also achieve a good average PCE of 8.26% with an average open circuit voltage (Voc) of 1.79 V for 2-terminal tandem OPVs using this blend. Based on tandem design, an OPV with PCE of 6.45% and AVT of 38% is demonstrated. Moreover, our devices show improved shelf life and ultraviolet (UV) stability (using CdSe/ZnS core shell quantum dots [QDs]) in ambient with 45% relative humidity.

scholarly journals Origin of the enhanced performance in poly(3-hexylthiophene): [6,6]-phenyl C61-butyric acid methyl ester solar cells upon slow drying of the active layer

2006 ◽  
Vol 89 (1) ◽  
pp. 012107 ◽  
Author(s):  
Valentin D. Mihailetchi ◽  
Hangxing Xie ◽  
Bert de Boer ◽  
Lacramioara M. Popescu ◽  
Jan C. Hummelen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Methyl Ester ◽  
Active Layer ◽  
Butyric Acid ◽  
Acid Methyl Ester ◽  
Acid Methyl ◽  
Butyric Acid Methyl Ester

Elucidating the mechanisms underlying PCBM enhancement of CH3NH3PbI3 perovskite solar cells using GIXRD and XAFS

2020 ◽  
Vol 8 (6) ◽  
pp. 3145-3153 ◽  
Author(s):  
Bing Liu ◽  
Rongli Cui ◽  
Huan Huang ◽  
Xihong Guo ◽  
Jinquan Dong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Methyl Ester ◽  
Active Layer ◽  
Butyric Acid ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Acid Methyl ◽  
Butyric Acid Methyl Ester ◽  
The Stability

In this study, the stability mechanism of the optimized methyl ammonium lead triiodide (CH3NH3PbI3, MAPbI3)/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) perovskite active layer upon exposure to moisture, light, and heating was investigated.

scholarly journals Carrier Formation Dynamics of Organic Photovoltaics as Investigated by Time-Resolved Spectroscopy

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Kouhei Yonezawa ◽  
Minato Ito ◽  
Hayato Kamioka ◽  
Takeshi Yasuda ◽  
Liyuan Han ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Butyric Acid ◽  
Organic Photovoltaics ◽  
Acid Methyl Ester ◽  
Time Resolved ◽  
Blend Film ◽  
Time Resolved Spectroscopy ◽  
Blend Films ◽  
Acid Methyl ◽  
Butyric Acid Methyl Ester

Bulk heterojunction (BHJ) based on a donor (D) polymer and an acceptor (A) fullerene derivative is a promising organic photovoltaics (OPV). In order to improve the incident photon-to-current efficiency (IPCE) of the BHJ solar cell, a comprehensive understanding of the ultrafast dynamics of excited species, such as singlet exciton (D*), interfacial charge-transfer (CT) state, and carrier (D+), is indispensable. Here, we performed femtosecond time-resolved spectroscopy of two prototypical BHJ blend films: poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl C61-butyric acid methyl ester (PCBM) blend film and poly(9,9′-dioctylfluorene-co-bithiophene) (F8T2)/[6,6]-phenyl C71-butyric acid methyl ester (PC70BM) blend film. We decomposed differential absorption spectra into fast, slow, and constant components via two-exponential fitting at respective probe photon energies. The decomposition procedure clearly distinguished photoinduced absorptions (PIAs) due to D*, CT, and D+. Based on these assignments, we will compare the charge dynamics between the F8T2/PC70BM and P3HT/PCBM blend films.

scholarly journals Photo-degradation in air of the active layer components in a thiophene–quinoxaline copolymer:fullerene solar cell

2016 ◽  
Vol 18 (16) ◽  
pp. 11132-11138 ◽  
Author(s):  
Rickard Hansson ◽  
Camilla Lindqvist ◽  
Leif K. E. Ericsson ◽  
Andreas Opitz ◽  
Ergang Wang ◽  
...  
Keyword(s):  
Solar Cell ◽  
Methyl Ester ◽  
Active Layer ◽  
Butyric Acid ◽  
Acid Methyl Ester ◽  
Cell Performance ◽  
Photo Degradation ◽  
Solar Cell Performance ◽  
Acid Methyl ◽  
Butyric Acid Methyl Ester

We have studied the photo-degradation in air of a blend of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1), and how the photo-degradation affects the solar cell performance.

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