Inverted ITO-free organic solar cells based on p and n semiconducting oxides. New designs for integration in tandem cells, top or bottom detecting devices, and photovoltaic windows

Ajuria, Jon; Etxebarria, Ikerne; Cambarau, Werther; Muñecas, Udane; Tena‐Zaera, Ramón; Jimeno, J.C.; Pacios, Roberto

doi:10.1039/c0ee00318b

Cited by 60 publications

(41 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…22 MoO 3 is used as the electron blocking layer at the anode. 23 From initial examination, the devices in Fig. 4b show external quantum efficiencies (EQEs) similar to previously reported narrow bandgap organic devices demonstrating that photons absorbed by P2-P5 contribute to the photocurrent.…”

Section: Polymer Chemistry Papermentioning

confidence: 51%

Donor–acceptor polymers with tunable infrared photoresponse

et al. 2017

View full text Add to dashboard Cite

show abstract

Section: Polymer Chemistry Papermentioning

confidence: 51%

Donor–acceptor polymers with tunable infrared photoresponse

et al. 2017

View full text Add to dashboard Cite

show abstract

“…21 MoO 3 is used as the electron-blocking layer at the anode and matches the highest occupied molecular orbital (HOMO) level of the polymer. 22 The near-infrared absorbing material used in the fabrication of the BHJ photodiode is a polymer comprised of an exocyclic olefin subsituted 4H-cyclopenta[2,1-b:3,4-b′]dithiophene (CPDT) donor and a 2,1,3-benzoselenadiazole acceptor (CPDT-alt-BSe) (with a number-average molecular weight M n = 10 kg mol −1 and dispersity (Đ = 2.9). Closely related alternating donor/acceptor units along the backbones of conjugated copolymers have proven beneficial for achieving promising optoelectronic functionality.…”

Section: Resultsmentioning

confidence: 99%

Temperature-Dependent Detectivity of Near-Infrared Organic Bulk Heterojunction Photodiodes

Yao

London

et al. 2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Bulk heterojunction photodiodes are fabricated using a new donor−acceptor polymer with a near-infrared absorption edge at 1.2 μm, achieving a detectivity up to 10 12 Jones at a wavelength of 1 μm and an excellent linear dynamic range of 86 dB. The photodiode detectivity is maximized by operating at zero bias to suppress dark current, while a thin 175 nm active layer is used to facilitate charge collection without reverse bias. Analysis of the temperature dependence of the dark current and spectral response demonstrates a 2.8-fold increase in detectivity as the temperature was lowered from 44 to −12°C , a relatively small change when compared to that of inorganic-based devices. The near-infrared photodiode shows a switching speed reaching up to 120 μs without an external bias. An application using our NIR photodiode to detect arterial pulses of a fingertip is demonstrated.

show abstract

“…Our 3T design demands the inversion of the front cell, swapping the polarity in comparison to cells with regular configurations and making use of the inverted approach. These cells design gives very similar or slightly higher efficiencies [15]. PTB7 is benzodithiophene derivative from which devices up to 9.2% efficient are successfully processed [1].…”

Section: P3ht-ptb7mentioning

confidence: 99%

Series vs parallel connected organic tandem solar cells: Cell performance and impact on the design and operation of functional modules

Etxebarria

Furlan

Ajuria

et al. 2014

Solar Energy Materials and Solar Cells

Self Cite

View full text Add to dashboard Cite

Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. b s t r a c tTandem solar cells are the best approach to maximize the light harvesting and adjust the overall absorption of the cell to the solar irradiance spectrum. Usually, the front and back subcells are connected in series in two-terminal device (2T) designs which require a current matching between both subcells in order to avoid potential losses. Alternatively, they can also be connected in parallel giving rise to a three terminal connection (3T). In principle, both designs have their assets and drawbacks in terms of device performance, design and materials' characterization. In this letter, we theoretically and experimentally confront both designs with each other (2T and 3T). Theoretical estimations show a maximum PCE of 15% for 2T and about 13% for 3T structures with ideal bandgaps for the front and back cell. However, 3T tandem devices can yield higher efficiencies than 2T for some specific material combinations whose theoretical values are between 10% and 12%. Therefore, other aspects related to the fabrication feasibility are studied in order to analyze the most convenient approach for module development. The need of a conducting interlayer restricts the width of the cell and causes a 3% reduction in the geometrical fill factor of the module in comparison to the 2T approach. The R2R processing of modules with 3T cells would also require an additional laser step. Finally, a couple of existing material combinations have been experimentally implemented into 2T and 3T t...

show abstract

Inverted ITO-free organic solar cells based on p and n semiconducting oxides. New designs for integration in tandem cells, top or bottom detecting devices, and photovoltaic windows

Cited by 60 publications

References 30 publications

Donor–acceptor polymers with tunable infrared photoresponse

Donor–acceptor polymers with tunable infrared photoresponse

Temperature-Dependent Detectivity of Near-Infrared Organic Bulk Heterojunction Photodiodes

Series vs parallel connected organic tandem solar cells: Cell performance and impact on the design and operation of functional modules

Contact Info

Product

Resources

About