Journal Article10.1021/NL403997A
Low-temperature processed electron collection layers of graphene/TiO2 nanocomposites in thin film perovskite solar cells.
Jacob Tse-Wei Wang,James M. Ball,Eva M. Barea,Antonio Abate,Jack A. Alexander-Webber,Jian Huang,Michael Saliba,Iván Mora-Seró,Juan Bisquert,Henry J. Snaith,Robin J. Nicholas +10 more
TL;DR: A low-cost, solution-based deposition procedure utilizing nanocomposites of graphene and TiO2 nanoparticles as the electron collection layers in meso-superstructured perovskite solar cells shows the potential to contribute significantly toward the development of low- cost solar cells.
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Abstract: The highest efficiencies in solution-processable perovskite-based solar cells have been achieved using an electron collection layer that requires sintering at 500 °C. This is unfavorable for low-cost production, applications on plastic substrates, and multijunction device architectures. Here we report a low-cost, solution-based deposition procedure utilizing nanocomposites of graphene and TiO2 nanoparticles as the electron collection layers in meso-superstructured perovskite solar cells. The graphene nanoflakes provide superior charge-collection in the nanocomposites, enabling the entire device to be fabricated at temperatures no higher than 150 °C. These solar cells show remarkable photovoltaic performance with a power conversion efficiency up to 15.6%. This work demonstrates that graphene/metal oxide nanocomposites have the potential to contribute significantly toward the development of low-cost solar cells.
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Citations
Fabrication and Characterization of Organic–Inorganic Hybrid Perovskite Devices with External Doping
Kongchao Shen,Hao Liang Sun,Gengwu Ji,Yingguo Yang,ZhengJiang,Fei Song +5 more
- 27 Jul 2016
TL;DR: In this article, the authors reviewed the recent experimental progress on the external doping of hybrid perovskite devices by organics and metals, which demonstrate the tuning of optical absorption gap and the enhancement of both devices' stability and perform- ance.
Contact Engineering: Electrode Materials for Highly Efficient and Stable Perovskite Solar Cells
Jia-Wen Xiao,Congbo Shi,Chenxiao Zhou,Deliang Zhang,Yujing Li,Qi Chen +5 more
- 01 Sep 2017
TL;DR: The perovskite solar cells (PSCs) have attracted world-wide attention in both academia and industry as discussed by the authors and substantial literatures have been published to review the rapid progress in this field, mainly focused on the understanding of materials properties, design of device configuration, and the investigation of their operational principles.
Low temperature Zn-doped TiO2 as electron transport layer for 19% efficient planar perovskite solar cells
TL;DR: In this article, a zinc dopant is successfully inserted into TiO2 crystal lattice using low-temperature solution-processed route, which significantly improves the performance of perovskite solar cells.
High-performance semitransparent perovskite solar cells with solution-processed silver nanowires as top electrodes
Fei Guo,Hamed Azimi,Yi Hou,Thomas Przybilla,Mengyao Hu,Carina Bronnbauer,Stefan Langner,Erdmann Spiecker,Karen Forberich,Christoph J. Brabec +9 more
TL;DR: A thin layer of zinc oxide nanoparticles is introduced beneath the Ag NWs, which fulfills two essential functionalities: it ensures ohmic contact between the PC60BM and the AgNWs and it serves as a physical foundation that enables the solution-deposition of AgNWS without causing damage to the underlying perovskite.
Efficient and Environmentally Stable Perovskite Solar Cells Based on ZnO Electron Collection Layer
TL;DR: ZnO thin films prepared by spin-coating of nanoparticles at low temperature were utilized as the electron collection layer in CH3NH3PbI3-based perovskite solar cells having a planar heterojunction as discussed by the authors.
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