Stable and null current hysteresis perovskite solar cells based nitrogen doped graphene oxide nanoribbons hole transport layer.
Perovskite solar cells are becoming one of the leading technologies to reduce our dependency on traditional power sources. However, the frequently used component poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (



PSS) has several shortcomings, such as an easily corroded indium-tin-oxide (ITO) interface at elevated temperatures and induced electrical inhomogeneity. Herein, we propose solution-processed nitrogen-doped graphene oxide nanoribbons (NGONRs) as a hole transport layer (HTL) in perovskite solar cells, replacing the conducting polymer



PSS. The conversion efficiency of NGONR-based perovskite solar cells has outperformed a control device constructed using



PSS. Moreover, our proposed NGONR-based devices also demonstrate a negligible current hysteresis along with improved stability. This work provides an effective route for substituting



PSS as the effective HTL.
Department of Information Display, Kyung Hee University, Dongdaemoo-gu, 130-701 Seoul, Korea.
Jeongmo
J
Kim
Solar Energy Research Institute, National University of Malaysia, 43600 Bangi, Selangor, Malaysia.
Mohd Asri
MA
Mat Teridi
Department of Information Display, Kyung Hee University, Dongdaemoo-gu, 130-701 Seoul, Korea.
Abd Rashid Bin
AR
Mohd Yusoff
Department of Information Display, Kyung Hee University, Dongdaemoo-gu, 130-701 Seoul, Korea.
Jin
J
Jang