Article
Chemistry, Physical
Zhihao Li, Zhenhan Wang, Chunmei Jia, Zhi Wan, Chongyang Zhi, Can Li, Meihe Zhang, Chao Zhang, Zhen Li
Summary: This article proposes a new method for the deposition of SnO2 electron transport layers (ETLs) at room temperature, which is suitable for the fabrication of flexible solar cells. The experiments show that SnO2 films treated with amine gases are smoother and more compact compared to those treated with thermal annealing. A base-catalyzed densification mechanism is proposed to explain the experimental results. The flexible solar cells with the annealing-free SnO2 ETLs achieve high power conversion efficiencies and excellent flexibility.
Article
Polymer Science
Jae Woong Jung, Seung Hwan Son, Jun Choi
Summary: The study demonstrates that the polyaniline composite film has enhanced electrical conductivity and suitable energy level matching with CH3NH3PbI3 to improve the photovoltaic properties of the device. The composite film-based devices achieved a maximum efficiency of 16.61%, which is 21.6% higher than the device with pristine polyaniline. Additionally, the reduced graphene oxide-based composite film showed superior long-term stability compared to the pristine polyaniline-based device, indicating great potential for high performance perovskite solar cells.
Article
Chemistry, Physical
Mina Ghorbani, Saeed Sheibani, Hossein Abdizadeh, Mohammad Reza Golobostanfard
Summary: A porous bismuth ferrite (BFO)/reduced graphene oxide (rGO) nanocomposite thin film was successfully fabricated via a facile chemical approach for photoelectrochemical (PEC) water splitting. The BFO nanoparticles with a rhombohedral distorted perovskite crystal structure were grafted onto rGO nanosheets. The BFO/rGO (BGO) thin film exhibited smaller nanoparticles, higher porosity, higher visible absorption, narrower band gap energy, lower recombination rate of charge carriers, and higher photocurrent density compared to the BFO photoanode. The intimate hetero-structure between BFO nanoparticles and rGO nanosheets significantly boosted the charge separation and transfer, contributing to enhanced PEC water splitting efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Jong-Jin Park, Minwoo Lee, Yunseul Kim, Dong-Yu Kim
Summary: A newly designed alkylated rGO (AF-rGO) with high dispersity in a nonpolar solvent has been synthesized for use as a solution-processed HTM in PeSCs. The AF-rGO exhibits efficient hole extraction and transport abilities in PeSCs, resulting in a maximum PCE of 17%.
Article
Energy & Fuels
Ruiyuan Hu, Yonggui Sun, Lutao Li, Taomiao Wang, Hiroyuki Kanda, Cheng Liu, Yi Yang, Shiqi Huang, Abdullah M. Asiri, Liang Chu, Xing'ao Li, Kumar Varoon Agrawal, Mohammad Khaja Nazeeruddin
Summary: The study focused on transferring a defect-free monolayer graphene sheet onto the NiOx film surface as a template for van der Waals epitaxial growth of perovskite films, which enhanced the crystallinity, reduced the energy level offset, and accelerated charge transfer of the devices, leading to an improved power conversion efficiency of the inverted planar perovskite solar cells.
Article
Chemistry, Physical
Dong Wang, Qian Chen, Hongbo Mo, Dongxu Cheng, Xuzhao Liu, Wen Liu, Janet Jacobs, Andrew G. Thomas, Zhu Liu, Richard J. Curry
Summary: This study presents an in situ one-step synthesis strategy to embed NiOX nanoparticles in laser-induced graphene flakes (LIG) for defect-free perovskite solar cells (D-FPSCs). The D-FPSCs based on LIG@NiOX showed improved performance and longer stability under high humidity compared to traditional D-FPSCs based on graphite/carbon black.
Article
Chemistry, Physical
Fatma Pinar Gokdemir Choi, Hamed Moeini Alishah, Serap Gunes
Summary: Co-doping nickel oxide (NiOx) with cerium and zinc improves the efficiency and stability of inverted methylammonium lead tri-iodide (CH3NH3PbI3) solar cells by enhancing the power conversion efficiencies and reducing the roughness of the layers. The quality of perovskite layer and the interface between charge transport layers and perovskite are crucial factors in achieving this performance enhancement.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Composites
Se-Phin Cho, Geul Han, You-Hyun Seo, Yong-Jin Noh, Joon-Yong Sohn, In-Tae Hwang, Junhwa Shin, Chan-Hee Jung, Seok-In Na
Summary: This research demonstrates that a solution-processable reduced graphene oxide/poly (N-vinylpyrrolidone) nanocomposite (rGO/PVP) can serve as an effective hole-transport layer (HTL) in perovskite solar cells (PeSCs), outperforming traditional graphene nanoflakes (GNFs) and poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS). The rGO/PVP composite, easily producible via cost-effective electron beam technology, shows promising potential for long-lasting high-performance PeSCs.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jiangshan Shi, Bin Li, Qinghong Zhang, Yichuan Rui
Summary: AgCuO2, a p-type semiconductor with high hole mobility, synthesized by electrochemical deposition can serve as a hole transport layer in perovskite solar cells, achieving high efficiency and excellent properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Jun Choi, Young Ki Park, Hee Dong Lee, Seok Il Hong, Woosung Lee, Jae Woong Jung
Summary: A sol-gel-driven ZrSnO4 thin film with high optical transmittance, suitable conduction band maximum, and good electrical conductivity demonstrates great potential as an electron transport layer material in planar-heterojunction perovskite solar cells. This optimized ETL contributes to promising power conversion efficiency and decent long-term stability in non-encapsulated devices.
Article
Chemistry, Physical
Haider G. Abdulzahraa, Mustafa K. A. Mohammed, Arkan Saad Mohammed Raoof
Summary: Perovskite photovoltaics have emerged as a promising technology for next-generation photovoltaics. Developing a hole blocking layer (HBL) has proven to be a successful method in improving the efficiency of perovskite solar cells (PSCs). In this study, planar 3D/2D devices were developed using tin oxide (SnO2) modified with reduced graphene oxide (rGO). The modified HBL showed improvements in perovskite crystallization, optical absorption, and defect passivation at the perovskite/SnO2 interface, resulting in enhanced charge transfer and better work function alignment. The incorporation of optimized 3% rGO additive in the SnO2 layer led to champion performance in Jsc, Voc, and FF of the PSCs, with an efficiency boost from 16.48% to 20.98%. This HBL modification approach allows for defect passivation, further improving the performance of perovskite photovoltaics.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
E. Erdenebileg, N. Tiwari, F. U. Kosasih, H. A. Dewi, L. Jia, N. Mathews, S. Mhaisalkar, A. Bruno
Summary: Metal oxides, such as non-stoichiometric nickel oxide (NiOx), have been widely used in thin film solar cells for their suitable energy band levels, high charge carrier mobilities, and excellent stability. In this study, we demonstrate the fabrication of co-evaporated perovskite solar cells (PSCs) with sputtered NiOx as the hole transport layer. We investigate the impact of sputtering conditions on the physical properties of NiOx and achieve highly efficient PSCs using optimized conditions.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Yueming Wang, Samah Akel, Benjamin Klingebiel, Thomas Kirchartz
Summary: Achieving high efficiencies in halide perovskite solar cells with thicknesses >1 μm is crucial for developing perovskite-Si tandem cells based on small pyramidal structures. Improving the quality of the perovskite layer and optimizing the properties of the charge-transport layers are essential for reducing charge-collection losses. Using bilayers of hole-transport layers can enhance charge collection and fill factors in thick inverted perovskite solar cells.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Xu Cai, Jin Tang, Min Zhao, Le Liu, Zhibin Yu, Jiajia Du, Ling Bai, Fushen Lu, Tonggang Jiu, Yuliang Li
Summary: The study demonstrates that doping graphdiyne oxide into P3CT-K nanocomposites can effectively enhance the performance of inverted perovskite solar cells, by controlling the aggregation and improving both device performance and crystal quality.
Article
Engineering, Environmental
Jihyeon Heo, Seok Woo Lee, Jihye Yong, Hansol Park, Yu Kyung Lee, Juhwan Shin, Dong Ryeol Whang, Dong Wook Chang, Hui Joon Park
Summary: This study successfully improved the interfacial properties between NiOx and perovskite by introducing newly designed organic materials, reducing interface defects. The research also found that the energy level alignment and dipole moment of HTMs play a crucial role in enhancing the built-in potential of PSCs, while the hydrophobic characteristics of HTMs improve the crystallinity of the perovskite layer.
CHEMICAL ENGINEERING JOURNAL
(2023)
