Journal ArticleDOI
Dual Interfacial Modifications Enable High Performance Semitransparent Perovskite Solar Cells with Large Open Circuit Voltage and Fill Factor
Qifan Xue,Yang Bai,Meiyue Liu,Ruoxi Xia,Zhicheng Hu,Ziming Chen,Xiao-Fang Jiang,Fei Huang,Shihe Yang,Yutaka Matsuo,Hin-Lap Yip,Yong Cao +11 more
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TLDR
In this paper, both anode and cathode interfaces of p-i-n CH3NH3PbI3 perovskite solar cells are simultaneously modified to achieve large open-circuit voltage (Voc) and fill factor (FF) for high performance semitransparent PVSCs (ST-PVSCs).Abstract:
In this work, both anode and cathode interfaces of p-i-n CH3NH3PbI3 perovskite solar cells (PVSCs) are simultaneously modified to achieve large open-circuit voltage (Voc) and fill factor (FF) for high performance semitransparent PVSCs (ST-PVSCs). At the anode, modified NiO serves as an efficient hole transport layer with appropriate surface property to promote the formation of smooth perovskite film with high coverage. At the cathode, a fullerene bisadduct, C60(CH2)(Ind), with a shallow lowest unoccupied molecular orbital level, is introduced to replace the commonly used phenyl-C61-butyric acid methyl ester (PCBM) as an alternative electron transport layer in PVSCs for better energy level matching with the conduction band of the perovskite layer. Therefore, the Voc, FF and power conversion efficiency (PCE) of the PVSCs increase from 1.05 V, 0.74 and 16.2% to 1.13 V, 0.80 and 18.1% when the PCBM is replaced by C60(CH2)(Ind). With the advantages of high Voc and FF, ST-PVSCs are also fabricated using an ultrathin transparent Ag as cathode, showing an encouraging PCEs of 12.6% with corresponding average visible transmittance (AVT) over 20%. These are the highest PCEs reported for ST-PVSCs with similar AVTs paving the way for using ST-PVSCs as power generating windows.read more
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Journal ArticleDOI
Defect and Contact Passivation for Perovskite Solar Cells.
TL;DR: The focus is on the origin of the various voltage-limiting mechanisms in PSCs, and the effect of such methods on the reduction of hysteresis are described.
Journal ArticleDOI
Interface Engineering for All‐Inorganic CsPbI2Br Perovskite Solar Cells with Efficiency over 14%
Lei Yan,Qifan Xue,Meiyue Liu,Zonglong Zhu,Jingjing Tian,Zhenchao Li,Zhen Chen,Ziming Chen,He Yan,Hin-Lap Yip,Yong Cao +10 more
TL;DR: In this work, a SnO2 /ZnO bilayered electron transporting layer (ETL) aimed to achieve low energy loss and large open-circuit voltage (Voc) for high-efficiency all-inorganic CsPbI2 Br perovskite solar cells (PVSCs) is introduced.
Journal ArticleDOI
Interface Engineering for Highly Efficient and Stable Planar p‐i‐n Perovskite Solar Cells
TL;DR: In this article, a review of recent progress on the interface engineering of planar p-i-n structure devices is presented, focusing on the interfaces between polycrystalline perovskite domains.
Journal ArticleDOI
Cesium Doped NiOx as an Efficient Hole Extraction Layer for Inverted Planar Perovskite Solar Cells
TL;DR: In this article, the impact of Cs dopant on the optoelectronic properties of NiOx and the photovoltaic performance has been investigated in inverted planar perovskite solar cells.
Journal ArticleDOI
Dual Interfacial Design for Efficient CsPbI 2 Br Perovskite Solar Cells with Improved Photostability.
Jingjing Tian,Qifan Xue,Xiaofeng Tang,Yuxuan Chen,Ning Li,Ning Li,Zhicheng Hu,Tingting Shi,Xin Wang,Fei Huang,Christoph J. Brabec,Hin-Lap Yip,Yong Cao +12 more
TL;DR: Both theoretical and experimental results reveal that PN4N and PDCBT can interact strongly with the perovskite crystal, which effectively passivates the electronic surface trap states and suppresses the photoinduced halide segregation of CsPbI2 Br films.
References
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Journal ArticleDOI
Detailed Balance Limit of Efficiency of p‐n Junction Solar Cells
TL;DR: In this article, an upper theoretical limit for the efficiency of p−n junction solar energy converters, called the detailed balance limit of efficiency, has been calculated for an ideal case in which the only recombination mechanism of holeelectron pairs is radiative as required by the principle of detailed balance.
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
Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber.
Samuel D. Stranks,Giles E. Eperon,Giulia Grancini,Christopher Menelaou,Marcelo J. P. Alcocer,Tomas Leijtens,Laura M. Herz,Annamaria Petrozza,Henry J. Snaith +8 more
TL;DR: In this article, transient absorption and photoluminescence-quenching measurements were performed to determine the electron-hole diffusion lengths, diffusion constants, and lifetimes in mixed halide and triiodide perovskite absorbers.
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.