Details

Autor(en) / Beteiligte

• Han, Gill Sang
• Yoo, Jin Sun
• Yu, Fangda
• Duff, Matthew Lawrence
• Kang, Bong Kyun
• Lee, Jung-Kun

Titel

Highly stable perovskite solar cells in humid and hot environmentElectronic supplementary information (ESI) available: Photovoltaic properties of the perovskite solar cells coated with solutions containing different amounts of PMMA in chlorobenzene; change of the contact angle on PRC/PSCs, as function of rGO contents; absorbance of bare PSC, PMMA/PSC and PRC/PSC after samples were submerged in water for 15 s and 600 s; steady-state photoluminescence (PL) of the perovskite films (a) perovskite/Ti

Erscheinungsjahr

2017-07

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• An organic-inorganic perovskite solar cell (PSC) is a very promising candidate for a next-generation photovoltaic system. For the last three years, the power conversion efficiency (PCE) of PSCs has been dramatically improved from 9.7% to 22.1%; however, a poor long-term stability still limits the commercialization of PSCs. In this study, we explore the effect of poly(methyl methacrylate) (PMMA)/reduced graphene oxide (rGO) composite (PRC) passivation layer on the chemical and thermal stability of PSCs. The PRC passivation layer shows superior protection performance due to improved hydrophobicity and increased complexity of the O 2 or H 2 O diffusion pathway. Moreover, the excellent thermal conductivity of rGO facilitates heat dissipation through the PRC layer. When the PRC layer is coated, the aging of PSCs is significantly prevented even under extreme conditions of humidity (>75%) and temperature (∼85 °C). Consequently, the PCE of PRC-passivated PSCs exhibits a negligible change in air, temperature of 35 °C, and humidity of 40% for 1000 h. Our study offers a simple and robust way to fabricate long-term stable and highly efficient PSCs, thus providing a path to PSC commercialization. An organic-inorganic perovskite solar cell (PSC) is a very promising candidate for a next-generation photovoltaic system.