Organic solar cell optimizations

Sun, Sam-Shajing; Fan, Zhen; Wang, Y.; Haliburton, James

doi:10.1007/s10853-005-0579-x

Cited by 71 publications

(79 citation statements)

References 32 publications

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“…This is, in effect, the first paper that laid out a full discussion of the many diverse parameters that must be considered when using block copolymers in OPVs. Subsequent work 168 further clarified the need for control over the whole polymer structure. Figure 12(a) shows the designed block copolymer where B is a linking group that covalently bonds the two blocks but interrupts electronic conjugation, and D and A are the donor and acceptor groups, respectively.…”

Section: As Single and Multicomponent Layersmentioning

confidence: 99%

“…171,121 Indeed, this methodology has been further optimized to give a device with exceptionally high V oc of around 1.1 V. 172 It was also exploited to separate P3HT and polystyrene blocks carrying fullerenes. 173 Elsewhere, the size of the flexible linker or ''spacer'' has been shown to have great influence on the degrees of order attainable by the constituent blocks.…”

Section: As Single and Multicomponent Layersmentioning

confidence: 99%

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Block copolymer strategies for solar cell technology

Topham¹,

Parnell²,

Hiorns³

2011

J Polym Sci B Polym Phys

186

169

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A simple overview of the methods used and the expected benefits of block copolymers in organic photovoltaic devices is given in this review. The description of the photovoltaic process makes it clear how the detailed self-assembly properties of block copolymers can be exploited. Organic photovoltaic technology, an inexpensive, clean and renewable energy source, is an extremely promising option for replacing fossil fuels. It is expected to deliver printable devices processed on flexible substrates using high-volume techniques. Such devices, however, currently lack the long-term stability and efficiency to allow organic photovoltaics to surpass current technologies. Block copolymers are envisaged to help overcome these obstacles because of their long term structural stability and their solid-state morphology being of the appropriate dimensions to efficiently perform charge collection and transfer to electrodes.

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Section: As Single and Multicomponent Layersmentioning

confidence: 99%

Section: As Single and Multicomponent Layersmentioning

confidence: 99%

Block copolymer strategies for solar cell technology

Topham¹,

Parnell²,

Hiorns³

2011

J Polym Sci B Polym Phys

186

169

View full text Add to dashboard Cite

show abstract

“…55 Attempts to exploit donor-acceptor block copolymers for photovoltaic applications have been limited, both in number and success. [56][57][58][59][60] Another way to make the blend morphology less sensitive to the film forming conditions was introduced by Kietzke and co-workers. 61 The method involves Figure 4.…”

Section: Factors Influencing the Morphology Of The Photoactive Layer mentioning

confidence: 99%

Nanoscale structure of solar cells based on pure conjugated polymer blends

Veenstra

Loos

Kroon

2007

Progress in Photovoltaics

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This paper gives an overview of the status of photovoltaic devices based on blends of semiconducting polymers. The polymer blends form the bulk heterojunction in these photovoltaic devices. The fundamental mechanisms governing the performance of these devices are discussed as well as the specificities of these all-polymer solar cells. The morphology of the polymer blend layer is expected to influence the device performance of these bulk heterojunctions. An overview is presented of factors that influence the morphology of the active layer of polymer blend photovoltaic devices together with a summary of tools available to study the structure of this layer. An advanced electron microscopy technique is applied to study the morphology of polymer blends of MDMO-PPV and PCNEPV with differing molecular weights. It is shown that the molecular weight of the polymer influences the typical domain size from $200 nm down to less than 5 nm in these bulk heterojunction PV devices. No strong relation is observed between the typical length scale of the phase separated domains and the measured external quantum efficiency, indicating that the phases are intermixed.

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“…The exciton nd ag junction fo is formed by the absorption of a photon by the organic p-type polymer, and then diffuses to the heterojunction where it dissociates into charge carriers by the electric field created by the p-n junction. The h moves back into the HOMO state of the p-type polymer while the e is transferred to the E C of the n-type inorganic semiconductor [17,38,41]. Therefore, there are two different transport mechanisms taking place simultaneously within the polymer semiconductor: the transport of electrically neutral excitons to the p-n junction, and the transport of the charge carrier to the electrode.…”

Section: Inorganic and Organic Semiconductors Lar Cell Would B Affectmentioning

confidence: 99%

“…There it is dissociated into charge carriers by the energy band offset of the p-n junction. The e is transferred to the E C of the n-type inorganic semiconductor and the h moves back into the HOMO state of the organic polymer [38,41]. Optimally, the photon would be absorbed within the depletion region of the p-n junction where the exciton would be immediately split into charge carriers.…”

Section: Inorganic and Organic Semiconductors Lar Cell Would B Affectmentioning

confidence: 99%

Progress on a Photovoltaic Cell Design Consisting of Silicon Nanowires and Poly (3‐ hexylthiophene)

Noice¹

2006

McNair Scholars Online Journal

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Citation: Noice, Lori. Progress on a photovoltaic cell design consisting of silicon nanowires and poly (3-hexylthiophene). Portland State University McNair Scholars Online Journal, Vol. 2, 2006Vol. 2, -2008. Progress on a photovoltaic cell design consisting of silicon nanowires and poly(3-hexylthiopenen)Lori Noice 1 , Gary Goncher 1 , Raj Solanki 1, 2 Abstract A bulk-heterojunction photovoltaic cell design made from silicon nanowires (SiNW) and poly(3-hexylthiophene) (P3HT) could provide the photon absorption and charge transport needed for a high efficiency hybrid PV cell. Since the mechanisms associated with the inorganic/organic semiconductor heterojunction are not yet well understood, the simple design of the proposed PV cell and tunable properties of both SiNW and P3HT affords experimental optimization opportunities.

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Organic solar cell optimizations

Cited by 71 publications

References 32 publications

Block copolymer strategies for solar cell technology

Block copolymer strategies for solar cell technology

Nanoscale structure of solar cells based on pure conjugated polymer blends

Progress on a Photovoltaic Cell Design Consisting of Silicon Nanowires and Poly (3‐ hexylthiophene)

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