PCDTBT is one of the next generation donor materials developed for organic photovoltaics to produce better efficiencies and lifetimes. The key properties of PCDTBT result from the lower HOMO/LUMO levels which lead to advantages over standard organic photovoltaic materials of increased open circuit voltage, longer wavelength absorption and improved stability under ambient conditions.

The lower lying HOMO level of PCDTBT makes it much more stable under ambient conditions and therefore an ideal candidate to use with large area deposition methods such as ink-jet printing, spray coating and blade coating. However, for these deposition techniques, uniform, aggregate free coatings are essential and so lower molecular weights are often desirable.

Power conversion efficiencies of up to 6.7% have been achieved in our own labs using PCDTBT (M137) in a standard reference architecture using PEDOT:PSS as a hole interface and calcium/aluminium as an electron interface. By using advanced interface materials and antireflection coatings PCDTBT has also achieved up to 7.2% in the literature [1].

For information on processing please see our specific fabrication details for PCDTBT below, general fabrication video, general fabrication guide, optical modelling paper on our standard architecture [2], or email us for any additional help and support.

Luminosyn™ PCDTBT

Luminosyn™ PCDTBT is now available.

General Information

Full name	Poly[N-9"-heptadecanyl-2,7-carbazole-alt-5,5-(4",7"-di-2-thienyl-2",1",3"-benzothiadiazole)]
Synonyms	PCDTBT
CAS number	958261-50-2
Chemical formula	(C43H47N3S3)n
Molecular weight	See Batch Details for information
HOMO / LUMO	HOMO = -5.4 eV, LUMO = -3.6 eV
Solubility	Chloroform, chlorobenzene, dichlorobenzene and trichlorobenzene
Classification / Family	Polycarbazoles, Heterocyclic five-membered ring, Organic semiconducting materials, Low band gap polymers, Organic photovoltaics, Polymer solar cells, OLEDs, OFETs and Perovskite solar cells

Chemical Structure

Usage Datasheet

For high performance organic photovoltaics with efficiencies of 6% and above poly[N-9"-heptadecanyl-2,7-carbazole-alt-5,5-(4",7"-di-2-thienyl-2",1",3"-benzothiadiazole)] (PCDTBT). We have achieved efficiencies of 6.7% in our own labs using a standard reference architecture of PEDOT:PSS as a hole interface and calcium/aluminium as an electron interface (see below for fabrication details). Our paper published in Nature Scientific Reports titled Molecular weight dependent vertical composition profiles of PCDTBT:PC71BM blends for organic photovoltaics explores the effect and optimisation of molecular weight.

Solution Details

Ossila’s reference devices were made by dissolving PCDTBT (M137) at 4 mg/ml in anhydrous chlorobenzene using a stir-bar and hotplate at 80°C overnight. This was then mixed with Ossila’s dry 95%/5% C70 PCBM (M113) powder in a 1:4 blend ratio to produce an overall concentration of 20 mg/ml.The blend solution was heated with a stir-bar on a hotplate at 80°C for 2 hours before cooling to room temperature over 10 minutes and filtering with a 0.45 μm PTFE filter immediately prior to spinning at 700 rpm to give a film of approx. 70 nm.

Device Structure

Ossila’s pre-patterned ITO substrates (S171) with 100 nm (20 Ω/square) ITO were cleaned with the following procedure:

• 5 minutes sonication in hot 1% Hellmanex III
• 2x hot dump rinses, 1x cold dump rinse
• 5 minutes sonication in warm IPA
• 3x cold dump rinses
• 5 minutes sonication in hot 10% NaOH solution
• 2x cold dump rinses then stored in DI water until use
• N₂ blow dry before spin-coating the hole transport layer (no further cleaning or surface treatment required)

PEDOT:PSS (AI4083 from Ossila) was filtered through a 0.45 µm PES filter (C2009S1) before spin coating at 6000 rpm in air to produce a layer 30 nm thick. The coated substrates were then stored on a hotplate at 150°C before transfer into a glove box and a further bake of 150°C for 10 mins to remove any residual moisture.The active ink was spin cast and the cathode strip wiped clean using chlorobenzene before transfer to an evaporator where 2.5 nm of Ca followed by 100 nm of Al were deposited at <10^-6 mbar. The substrates were then annealed at 80°C for 15 mins on a hotplate in the glove box before protecting with the Ossila encapsulation system. Measurement was performed under ambient conditions using a Newport 92251A AM1.5 100 mW/cm² solar simulator and NREL certified silicon reference cell.

As Featured In...

MSDS Documentation

PCDTBT MSDS sheet

Pricing

Batch	Quantity	Price
M1311	100 mg	£198.00
M1311	250 mg	£396.00
M1311	500 mg	£677.00
M1311	1 g	£1090.00
M1311	2 g	£1990.00
M1311	5 g / 10 g*	Please enquire

*for 5 - 10 grams order quantity, the lead time is 4-6 weeks.

Batch Details

The below materials are in stock for immediate dispatch to research institutions worldwide.

In general, PCDTBT is used at lower concentrations than P3HT (typically 4 to 7 mg/ml) and higher blend ratios (1:4 PCDTBT:PC₇₀BM) and as such 100 mg of PCDTBT will make around 500 devices on Ossila"s standard ITO substrates (20 x 15 mm) even assuming 50% material loss in filtration and solution preparation. Please note that as the higher molecular weight fractions have a lower yield we are now operating differential pricing policy. See below for more details on separation, yield and differential pricing.

Batch	Mw	Mn	PDI	Stock Info
M1311	34,900	16,200	2.15	In stock

Literature and References

Please note that Ossila has no formal connection to any other authors or institutions in these references.

1. Efficient, Air-Stable Bulk Heterojunction Polymer Solar Cells Using MoOx as the Anode Interfacial Layer, Y. Sun et al., Advanced Materials, 23, 2226-2230 (2011)
2. Optimising the efficiency of carbazole co-polymer solar-cells by control over the metal cathode electrode, D.C. Watters et al., Organic Electronics, 13, 1401-1408 (2012)
3. Efficient perovskite photovoltaic devices using chemically doped PCDTBT as a hole-transport material, M. Wong-Stringer et al., J. Mater. Chem. A, 2017, 5, 15714-15723; DOI: 10.1039/C7TA03103C.

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To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.

关于奥西拉 Ossila由有机电子研究科学家于2009年成立，旨在提供组件，设备和材料，以实现智能，高效的科学研究和发现。十多年来，我们很自豪能向全球80多个国家/地区的1000多个不同机构提供产品。 凭借在开发有机和薄膜LED，光伏和FET方面数十年的学术和工业经验，我们知道建立可靠，高效的器件制造和测试过程需要花费多长时间。因此，我们开发了相关的产品和服务包-使研究人员能够快速启动其有机电子产品开发计划。 奥西拉保证 全球免费送货 合格的订单可免费运送到世界任何地方 快速安全调度 通过安全跟踪的快递服务快速配送库存物品 质量保证 由所有设备的免费两年保修提供支持 清除前期定价 超过30种货币的清晰定价，无隐藏成本 大订单折扣 保存超过订单8％ $ 10,300.00和10％以上的订单 $ 12,900.00 专家支持 我们内部的科学家和工程师随时准备为您提供帮助 全球信赖 优质的产品和服务。已经向很多人推荐。 卡尔加里大学Gregory Welch博士 优质产品价格合理的客户友好公司！ Shahriar Anwar，亚利桑那州立大学 奥西拉团队 David Lidzey教授-主席 作为谢菲尔德大学的物理学教授，David Lidzey教授领导该大学的电子和光子分子材料研究小组（EPMM）。David在其职业生涯中，曾在学术和技术环境中工作，主要研究领域包括混合有机-无机半导体材料和器件，有机光子器件和结构以及溶液处理的光伏器件。在整个学术生涯中，他撰写了220多篇同行评审论文。 James Kingsley博士-董事总经理 James是Ossila的联合创始人兼董事总经理。他拥有量子力学/纳米技术博士学位，并在有机电子领域拥有超过12年的经验，他在有机光伏制造产能方面的工作导致了Ossila的成立并建立了强大的指导精神：加快科学发现的步伐。James对开发创新的设备以及改善可溶液加工的光伏和混合有机-无机设备新材料的可及性特别感兴趣。 Alastair Buckley博士-技术总监 Alastair是谢菲尔德大学的物理学讲师，专门研究有机电子学和光子学。他还是EPMM研究小组的成员，致力于研究功能有机材料的内在优势并将其应用到一系列光电设备中。Alastair的经验并非仅在学术界获得。他曾领导MicroEmissive Displays的研发团队，因此在OLED显示器方面拥有丰富的技术经验。他还是Elsevier的“有机发光二极管”的编辑和撰稿人。 我们的研究科学家 我们的研究科学家和产品开发人员在材料的合成和加工以及设备的制造和测试方面拥有丰富的经验。奥西拉（Ossila）的愿景是与学术界和工业界的研究人员分享这一经验，并提高他们的研究效率。通过提供无需费力设备制造过程的产品和服务，以及能够进行准确，快速测试的设备，我们就可以使科学家们腾出时间专注于他们最擅长的工作-科学。 客户服务团队 客户服务团队负责奥西拉的客户旅程。从创建和提供报价到采购和库存管理，客户服务团队致力于提供一流的客户服务。客户服务团队成员的日常职责包括处理客户订单和价格查询，回答客户查询，安排包裹运输以及将订单更新通知客户。 合作与伙伴关系 请联系客户服务团队以解决所有疑问，包括有关Ossila产品的技术问题或有关制造和测量过程的建议。 位置及设施 奥西拉（Ossila）设在谢菲尔德阿特克利夫（Attercliffe）的Solpro商业园区。 我们在现场运营一个专门建造的合成化学和设备测试实验室，在这里制造我们所有的高纯度，批次特定的聚合物和其他配方。此外，设备制造集群内的专用薄膜和有机电子测试与分析工具套件也位于谢菲尔德EPSRC国家外延设施的1000级无尘室中。 我们所有的电子设备均在现场制造。