Journal ArticleDOI
Interface engineering of highly efficient perovskite solar cells
Huanping Zhou,Qi Chen,Gang Li,Song Luo,Tze Bing Song,Hsin Sheng Duan,Ziruo Hong,Jingbi You,Yongsheng Liu,Yang Yang +9 more
TLDR
Perovskite films received a boost in photovoltaic efficiency through controlled formation of charge-generating films and improved current transfer to the electrodes and low-temperature processing steps allowed the use of materials that draw current out of the perovskites layer more efficiently.Abstract:
Advancing perovskite solar cell technologies toward their theoretical power conversion efficiency (PCE) requires delicate control over the carrier dynamics throughout the entire device. By controlling the formation of the perovskite layer and careful choices of other materials, we suppressed carrier recombination in the absorber, facilitated carrier injection into the carrier transport layers, and maintained good carrier extraction at the electrodes. When measured via reverse bias scan, cell PCE is typically boosted to 16.6% on average, with the highest efficiency of ~19.3% in a planar geometry without antireflective coating. The fabrication of our perovskite solar cells was conducted in air and from solution at low temperatures, which should simplify manufacturing of large-area perovskite devices that are inexpensive and perform at high levels.read more
Citations
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Journal ArticleDOI
Microscopic Degradation in Formamidinium-Cesium Lead Iodide Perovskite Solar Cells under Operational Stressors
Nengxu Li,Yanqi Luo,Zehua Chen,Xiuxiu Niu,Xiao Zhang,Jiuzhou Lu,Rishi E. Kumar,Junke Jiang,Huifen Liu,Xiao Guo,Barry Lai,Geert Brocks,Geert Brocks,Qi Chen,Shuxia Tao,David P. Fenning,Huanping Zhou +16 more
TL;DR: In this paper, the performance of perovskite solar cells based on formamidinium-cesium lead iodide (FA0.9Cs0.1PbI3) was studied under a series of controlled operational stressors.
Journal ArticleDOI
A hole-transport material that also passivates perovskite surface defects for solar cells with improved efficiency and stability
TL;DR: In this paper, a facile design concept to functionalize HTMs so that they can passivate perovskite surface defects and enable perovsite active layers with lower density of surface trap states and more efficient charge transfer to the hole transport layer was proposed.
Journal ArticleDOI
Energy Level Offsets at Lead Halide Perovskite/Organic Hybrid Interfaces and Their Impacts on Charge Separation
Qian-Kun Wang,Rongbin Wang,Pengfei Shen,Chi Li,Yan-Qing Li,Lijia Liu,Steffen Duhm,Jian-Xin Tang +7 more
TL;DR: In this article, the energy level alignments at the hybrid interfaces between lead halide perovskite and organic hole-transport materials (HTMs) using in situ ultraviolet and X-ray photoemission techniques are provided.
Journal ArticleDOI
Breakthroughs in NiOx-HTMs towards stable, low-cost and efficient perovskite solar cells
Sajid Sajid,Ahmed Mourtada Elseman,Hao Huang,Jun Ji,Shangyi Dou,Haoran Jiang,Xin Liu,Dong Wei,Peng Cui,Meicheng Li +9 more
TL;DR: In this paper, the NiOx-HTMs for perovskite solar cells (PSCs) have been investigated for high efficiency and long-term stability with commercial viability.
Journal ArticleDOI
Temperature-dependent hysteresis effects in perovskite-based solar cells
TL;DR: In this paper, a perovskite solar cell at 250 K, 300 K, and 360 K was used to investigate the complexity of the signal that cannot be described by a simple mono-exponential function, suggesting that multiple charging-discharging processes are responsible for the complex hysteresis behavior.
References
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Journal ArticleDOI
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Journal ArticleDOI
Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
Michael M. Lee,Joël Teuscher,Tsutomu Miyasaka,Takurou N. Murakami,Takurou N. Murakami,Henry J. Snaith +5 more
TL;DR: A low-cost, solution-processable solar cell, based on a highly crystalline perovskite absorber with intense visible to near-infrared absorptivity, that has a power conversion efficiency of 10.9% in a single-junction device under simulated full sunlight is reported.
Journal ArticleDOI
Sequential deposition as a route to high-performance perovskite-sensitized solar cells
Julian Burschka,Norman Pellet,Norman Pellet,Soo-Jin Moon,Robin Humphry-Baker,Peng Gao,Mohammad Khaja Nazeeruddin,Michael Grätzel +7 more
TL;DR: A sequential deposition method for the formation of the perovskite pigment within the porous metal oxide film that greatly increases the reproducibility of their performance and allows the fabrication of solid-state mesoscopic solar cells with unprecedented power conversion efficiencies and high stability.
Journal ArticleDOI
Efficient planar heterojunction perovskite solar cells by vapour deposition
TL;DR: It is shown that perovskite absorbers can function at the highest efficiencies in simplified device architectures, without the need for complex nanostructures.
Journal ArticleDOI
Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%
Hui-Seon Kim,Chang-Ryul Lee,Jeong-Hyeok Im,Ki Beom Lee,Thomas Moehl,Arianna Marchioro,Soo-Jin Moon,Robin Humphry-Baker,Jun-Ho Yum,Jacques-E. Moser,Michael Grätzel,Nam-Gyu Park +11 more
TL;DR: The use of a solid hole conductor dramatically improved the device stability compared to (CH3NH3)PbI3 -sensitized liquid junction cells.