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
Bi-functional additive engineering for high-performance perovskite solar cells with reduced trap density
Yi Yang,Huirong Peng,Cheng Liu,Zulqarnain Arain,Zulqarnain Arain,Yong Ding,Shuang Ma,Xiaolong Liu,Tasawar Hayat,Ahmed Alsaedi,Songyuan Dai,Songyuan Dai +11 more
TL;DR: In this paper, ammonium benzenesulfonate (ABS) is introduced as a coordination and passivation molecule into a perovskite to improve the film quality and reduce defect densities.
Journal ArticleDOI
Iodide-reduced graphene oxide with dopant-free spiro-OMeTAD for ambient stable and high-efficiency perovskite solar cells
TL;DR: In this article, the use of a p-type and highly conductive reduced graphene oxide (RGO) reduced by ferrous iodide acid solution, combined with dopant-free spiro-OMeTAD as a hole extraction and transport material in perovskite solar cells, achieving a maximum power conversion efficiency (PCE) of 10.6%.
Journal ArticleDOI
In Situ Back-Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells.
Furui Tan,Furui Tan,Hairen Tan,Hairen Tan,Makhsud I. Saidaminov,Mingyang Wei,Mengxia Liu,Anyi Mei,Peicheng Li,Bowen Zhang,Chih Shan Tan,Xiwen Gong,Yongbiao Zhao,Ahmad R. Kirmani,Ziru Huang,James Z. Fan,Rafael Quintero-Bermudez,Junghwan Kim,Yicheng Zhao,Oleksandr Voznyy,Yueyue Gao,Feng Zhang,Lee J. Richter,Zheng-Hong Lu,Weifeng Zhang,Edward H. Sargent +25 more
TL;DR: In situ back-contact passivation (BCP) that reduces interfacial and extraction losses between the perovskite absorber and the hole transport layer (HTL) is reported and it is shown that a flat-band alignment between theperovskites and polymer passivation layers achieves a high photovoltage and fill factor.
Journal ArticleDOI
Selective enhancement of optical nonlinearity in two-dimensional organic-inorganic lead iodide perovskites.
Felix O. Saouma,Constantinos C. Stoumpos,J. Wong,Mercouri G. Kanatzidis,Joon I. Jang,Joon I. Jang +5 more
TL;DR: It is shown that the third-order optical nonlinearity, n2, of hybrid lead iodide perovskites is enhanced in the two-dimensional Ruddlesden-Popper series, which increases the laser-induced damage threshold for high-power nonlinear optical applications.
Journal ArticleDOI
Solution-Processed Transparent Electrodes for Emerging Thin-Film Solar Cells
TL;DR: A detailed discussion on the recent development of solution-processed TEs, including the chemical synthesis of the electrode materials, the solution-based technologies for the electrode fabrication, the optical and electrical properties of the solutions, and their applications on solar cells are provided.
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.