Self-Assembled Hole Transporting Monolayer to Improve PiN Type Perovskite Solar Cell Performance

Ece Aktas^a^,^b, Jesús Jiménez-López^a^,^c, Emilio Palomares^a^,^d

^aInstitute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda dels Països Catalans, 16, Tarragona, Spain

^bDepartament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingos/n, 43007 Tarragona,Spain

^cDepartament d’Enginyeria Electrònica, Elèctrica i Automàtica, Univeristat Rovira i Virgili, Avda. Països Catalans 16, 43007 Tarragona, Spain

^dInstitució Catalana de Recerca i Estudis Avançats (ICREA), Spain, Passeig Lluis Companys 23, Barcelona, Spain

Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP20)

Tsukuba-shi, Japan, 2020 January 20th - 22nd

Organizers: Michio Kondo and Takurou Murakami

Oral, Ece Aktas, presentation 026
DOI: https://doi.org/10.29363/nanoge.iperop.2020.026
Publication date: 14th October 2019

Perovskite solar cells (PSCs) offer a magnificent opportunity to harness solar energy in an efficient and low cost way. The ambition for commercialization has been greatly encouraged by the surge in device performance from 3.8% in 2009 to the state-of-the-art 25.2%¹. To obtain high power conversion efficiency altering the interfacial properties is essentially important. New charge selective contacts have been investigated to provide possible solutions to overcome this hurdle. Being in a molecular scale, self-assembled monolayers (SAMs) are promising affordable candidates for interface modification. SAMs are essentially organic assemblies formed by the adsorption of molecular constituents from solution onto the surface of solids. In the literature, several studies have shown that SAMs have many positive effects for PSCs, including the improvement of the energy level alignment, positively affecting the morphology, and passivating trap states². They are offering the benefits of uniformly formed layers with minimized thickness that will be suitable for large-scale production³.

In the present talk, we will discuss semiconductor self-assembled monolayer to use as hole transporting layer instead of PEDOT:PSS for PiN type perovskite solar cells. We will present preparation procedure and photovoltaic characterization of devices, which have improved power conversion efficiency.

References:

[1] Kojima, A.; Teshima, K.; Shirai, Y.; Miyasaka, T. Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells. J. Am. Chem. Soc. 2009, 131 (17), 6050–6051 [1]

[2] Yalcin, E.; Can, M.; Aktas, E.; Pudi, R.; Cambarau, W.; Demic, S.; Palomares, E. Environmental Science Semiconductor Self-Assembled Monolayers as Selective Contacts for Efficient PiN Perovskite Solar Cells †. Energy Environ. Sci. 2019, 12, 230–237

[3] Qiao, R.; Zuo, L.; Introduction, I. Self-Assembly Monolayers Boosting Organic – Inorganic Halide Perovskite Solar Cell Performance. J. Mater. Res. 2018, 33 (4), 387–400

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