Efficient luminescent solar cells based on tailored mixed-cation perovskites
Dongqin Bi,Wolfgang Tress,M. Ibrahim Dar,Peng Gao,Jingshan Luo,Clementine Renevier,Kurt Schenk,Antonio Abate,Fabrizio Giordano,Juan-Pablo Correa Baena,Jean-David Decoppet,Shaik M. Zakeeruddin,Mohammad Khaja Nazeeruddin,Michael Grätzel,Anders Hagfeldt +14 more
TLDR
A new metal halide perovskite photovoltaic cell that exhibits both very high solar-to-electric power-conversion efficiency and intense electroluminescence is reported on.Abstract:
We report on a new metal halide perovskite photovoltaic cell that exhibits both very high solar-to-electric power-conversion efficiency and intense electroluminescence. We produce the perovskite films in a single step from a solution containing a mixture of FAI, PbI2, MABr, and PbBr2 (where FA stands for formamidinium cations and MA stands for methylammonium cations). Using mesoporous TiO2 and Spiro-OMeTAD as electron- and hole-specific contacts, respectively, we fabricate perovskite solar cells that achieve a maximum power-conversion efficiency of 20.8% for a PbI2/FAI molar ratio of 1.05 in the precursor solution. Rietveld analysis of x-ray diffraction data reveals that the excess PbI2 content incorporated into such a film is about 3 weight percent. Time-resolved photoluminescence decay measurements show that the small excess of PbI2 suppresses nonradiative charge carrier recombination. This in turn augments the external electroluminescence quantum efficiency to values of about 0.5%, a record for perovskite photovoltaics approaching that of the best silicon solar cells. Correspondingly, the open-circuit photovoltage reaches 1.18 V under AM 1.5 sunlight.read more
Citations
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Composition Engineering in Doctor-Blading of Perovskite Solar Cells
Shi Tang,Yehao Deng,Xiaopeng Zheng,Yang Bai,Yanjun Fang,Qingfeng Dong,Haotong Wei,Jinsong Huang,Jinsong Huang +8 more
TL;DR: In this article, a doctor-bladed OIHP solar cell with p-i-n planar hetero-junction structure was used to enhance the power conversion efficiency.
Journal ArticleDOI
The effect of illumination on the formation of metal halide perovskite films
Amita Ummadisingu,Ludmilla Steier,Ji-Youn Seo,Taisuke Matsui,Antonio Abate,Wolfgang Tress,Michael Grätzel +6 more
TL;DR: It is shown that light has a strong influence on the rate of perovskite formation and on film morphology in both of the main deposition methods currently used: sequential deposition and the anti-solvent method.
Journal ArticleDOI
Homogenized halides and alkali cation segregation in alloyed organic-inorganic perovskites
Juan-Pablo Correa-Baena,Juan-Pablo Correa-Baena,Yanqi Luo,Thomas M. Brenner,Jordan Snaider,Shijing Sun,Xueying Li,Mallory A. Jensen,Noor Titan Putri Hartono,Lea Nienhaus,Sarah Wieghold,Jeremy R. Poindexter,Shen Wang,Ying Shirley Meng,Ti Wang,Barry Lai,Martin V. Holt,Zhonghou Cai,Moungi G. Bawendi,Libai Huang,Tonio Buonassisi,David P. Fenning +21 more
TL;DR: Halide homogenization coincides with long-lived charge carrier decays, spatially homogeneous carrier dynamics, and improved photovoltaic device performance, and it is found that rubidium and potassium phase-segregate in highly concentrated clusters.
Journal ArticleDOI
Efficient planar heterojunction perovskite solar cells with Li-doped compact TiO2 layer
Detao Liu,Shibin Li,Peng Zhang,Yafei Wang,Rui Zhang,Hojjatollah Sarvari,Feng Wang,Feng Wang,Jiang Wu,Zhiming Wang,Zhi David Chen,Zhi David Chen +11 more
TL;DR: Li-doping of compact TiO2 can reduce the density of electron traps and increase the conductivity of the electron transport layer (ETL) of planar perovskite solar cells.
Journal ArticleDOI
Over 20% PCE perovskite solar cells with superior stability achieved by novel and low-cost hole-transporting materials
Fei Zhang,Fei Zhang,Zhiqiang Wang,Hongwei Zhu,Norman Pellet,Norman Pellet,Jingshan Luo,Chenyi Yi,Xicheng Liu,Hongli Liu,Shirong Wang,Xianggao Li,Yin Xiao,Shaik M. Zakeeruddin,Dongqin Bi,Michael Grätzel +15 more
TL;DR: In this article, two novel molecular hole-transporting materials (HTMs) using the thiophene core were designed and synthesized (Z25 and Z26), and the perovskite solar cells based on Z26 exhibited a remarkable overall power conversion efficiency (PCE) of 20.1%, which is comparable to 20.6% obtained with spiroOMeTAD.
References
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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
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.
Journal ArticleDOI
High-performance photovoltaic perovskite layers fabricated through intramolecular exchange
Woon Seok Yang,Jun Hong Noh,Nam Joong Jeon,Young Chan Kim,Seungchan Ryu,Jangwon Seo,Sang Il Seok +6 more
TL;DR: An approach for depositing high-quality FAPbI3 films, involving FAP bI3 crystallization by the direct intramolecular exchange of dimethylsulfoxide (DMSO) molecules intercalated in PbI2 with formamidinium iodide is reported.