Aqueous processing of Ag-nanowire electrodes on top of semi-transparent perovskite solar cells  (Conference Presentation)

Tobias Gahlmann; Kai Oliver Brinkmann; Christian Tückmantel; Tim Becker; Junjie He; Johannes Bahr; Cedric Kreusel; Thomas Riedl

doi:10.1117/12.2529331

10 September 2019 Aqueous processing of Ag-nanowire electrodes on top of semi-transparent perovskite solar cells (Conference Presentation)

Tobias Gahlmann, Kai Oliver Brinkmann, Christian Tückmantel, Tim Becker, Junjie He, Johannes Bahr, Cedric Kreusel, Thomas Riedl

Author Affiliations +

Proceedings Volume 11094, Organic, Hybrid, and Perovskite Photovoltaics XX; 110940D (2019) https://doi.org/10.1117/12.2529331
Event: SPIE Organic Photonics + Electronics, 2019, San Diego, California, United States

Abstract

Aqueous dispersions of silver nanowires state an environmentally friendly avenue for highly conductive, yet transparent top electrodes for semi-transparent perovskite solar cells. However, for the well-known chemical instability of halide perovskites upon exposure to water, there are no reports of successful aqueous processing on top of perovskite devices. Here, we show that electron extraction layers of AZO/SnOx [1,2], with the SnOx grown by low temperature atomic layer deposition, provide outstanding protection layers, which even afford the spray coating of AgNW electrodes (sheet resistance Rsh =15 Ohm/sq and a transmittance of 90%) from water-based dispersions without damage to the perovskite. The layer sequence of the inverted cells is ITO/PTAA/perovskite/PCBM/AZO/SnOx/top-electrode. In devices without the ALD SnOx, aqueous spray processing decomposes the perovskite layers. Interestingly, the direct interface of Ag-NW/SnOx comprises a Schottky barrier, with characteristics strongly dependent on the charge carrier density of the SnOx. For a carrier density below 10^18 cm^-3, S-shaped J-V characteristics are found, that successively vanish upon UV-light soaking. For our low-T SnOx with 10^16 cm^-3, the insertion of a thin interfacial layer with a high charge carrier density (10^20 cm^-3), e.g. 10nm of ITO, is found to afford high performance semitransparent PSCs with an efficiency of 15%. Most importantly, compared to ITO electrodes Ag-NW based electrodes provide a key to achieve a higher transmittance in the IR, which is desirable for tandem Si/PSCs. [1] K. Brinkmann et al., Nat. Commun. 8, 13938 (2017). [2] L. Hoffmann et al. ACS Applied Mater. & Interfaces 10, 6006 (2018).

Conference Presentation

Citation Download Citation

Tobias Gahlmann, Kai Oliver Brinkmann, Christian Tückmantel, Tim Becker, Junjie He, Johannes Bahr, Cedric Kreusel, and Thomas Riedl "Aqueous processing of Ag-nanowire electrodes on top of semi-transparent perovskite solar cells (Conference Presentation)", Proc. SPIE 11094, Organic, Hybrid, and Perovskite Photovoltaics XX, 110940D (10 September 2019); https://doi.org/10.1117/12.2529331

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Perovskite

Electrodes

Solar cells

Atomic layer deposition

Interfaces

Transmittance

Coating

Show All Keywords

Keywords/Phrases

Search In:

Publication Years