@article{10902/29176,
year = {2020},
month = {6},
url = {https://hdl.handle.net/10902/29176},
abstract = {Four-terminal (4-T) tandem solar cells (e.g., perovskite/CuInSe2 (CIS)) rely on three transparent conductive oxide electrodes with high mobility and low free carrier absorption in the near-infrared (NIR) region. In this work, a reproducible In2O3:H (IO:H) film deposition process is developed by independently controlling H2 and O2 gas flows during magnetron sputtering, yielding a high mobility value up to 129 cm2 V–1 s–1 in highly crystallized IO:H films annealed at 230 °C. Optimization of H2 and O2 partial pressures further decreases the crystallization temperature to 130 °C. By using a highly crystallized IO:H film as the front electrode in NIR-transparent perovskite solar cell (PSC), a 17.3% steady-state power conversion efficiency and an 82% average transmittance between 820 and 1300 nm are achieved. In combination with an 18.1% CIS solar cell, a 24.6% perovskite/CIS tandem device in 4-T configuration is demonstrated. Optical analysis suggests that an amorphous IO:H film (without postannealing) and a partially crystallized IO:H film (postannealed at 150 °C), when used as a rear electrode in a NIR-transparent PSC and a front electrode in a CIS solar cell, respectively, can outperform the widely used indium-doped zinc oxide (IZO) electrodes, leading to a 1.38 mA/cm2 short-circuit current (Jsc) gain in the bottom CIS cell of 4-T tandems.},
organization = {This work was supported by funding from the Swiss Federal Office of Energy (SFOE)-BFE (project no. SI/501805-01), Swiss National Science Foundation (SNF)-Bridge (project no. 20B2-1_176552/1), and the European Research Council (ERC) under EU’s Horizon 2020 Research and Innovation Program (grant agreement no. 681312). We thank Dr. Yi Hou for the supply of the antireflection foil.},
publisher = {American Chemical Society},
publisher = {ACS Nano, 2020, 14(6), 7502-7512},
title = {High-mobility In2O3:H electrodes for four-terminal perovskite/CuInSe2 tandem solar cells},
author = {Jiang, Yan and Feurer, Thomas and Carron, Romain and Torres Sevilla, Galo and Moser, Thierry and Pisoni, Stefano and Erni, Rolf and Rossell, Marta-Dacil and Ochoa Gómez, Mario and Hertwig, Ramis and Tiwari, Ayodhya Nath and Fu, Fan},
}