Journal
ACS APPLIED NANO MATERIALS
Volume 1, Issue 11, Pages 6159-6167Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.8b01371
Keywords
perovskite; solar cells; hexagonal-tiled ITO; photon management; light trapping
Funding
- National Natural Science Foundation [51672094, 51661135023, 51572070]
- National Key R&D Program of China [2016YFC0205002]
- Self-determined and Innovative Research Funds of HUST [2016JCTD111]
- China Postdoctoral Science Foundation [2016M602286]
- Guangdong Natural Science Foundation [2017A030313342]
- Basic Research Project of Shenzhen Science and Technology Plan [JCYJ201005280434A]
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The photon management and light trapping could significantly improve the short-circuit photocurrent densities (J(SC)) and power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) by scattering of the light or reducing the optical losses. However, it remains challenging to fabricate the textured substrate or window layer in PSCs. In this study, hexagonal-tiled indium tin oxide (ITO) substrates are prepared by a simple and low-cost method in terms of photon management and microstructure. The hexagonal-tiled ITO surfaces not only can increase the absorption of light but also can be beneficial to extraction of interface charge. Photovoltaic device-used hexagonal-tiled ITO substrate with the suitable thickness exhibited a maximum PCE of 18.2%, with the V-oc of 1.06 V, J(SC) of 21.65 mA cm(-2), and fill factor of 0.791, which showed an encouraging improvement of over 7.2% in the J(SC) and a 7.4% enhancement in the PCE compared with the traditional ITO substrate.
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