Journal ArticleDOI
Laser Crystallization of Organic-Inorganic Hybrid Perovskite Solar Cells.
Taewoo Jeon,Hyeong Min Jin,Seung Hyun Lee,Ju Min Lee,Hyung Il Park,Mi Kyung Kim,Keon Jae Lee,Byungha Shin,Sang Ouk Kim +8 more
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TLDR
Laser crystallization of hybrid perovskite solar cells using near-infrared (NIR) laser attains higher device performances than conventional thermal annealing and demonstrates inverted-type perovkiteSolar cells with 11.3 and 8.0% efficiencies on typical glass and flexible polymer substrates, respectively, without rigorous device optimization.Abstract:
Organic–inorganic hybrid perovskites attract enormous research interest for next generation solar energy harvest. Synergistic crystalline structures comprising organic and inorganic components enable solution processing of perovskite films. A reliable crystallization method for perovskites, compatible with fast continuous process over large-area flexible substrates, is crucial for high performance solar cell production. Here, we present laser crystallization of hybrid perovskite solar cells using near-infrared (NIR) laser (λ = 1064 nm). Crystalline morphology of CH3NH3PbI3 (MAPbI3) perovskite films are widely controllable with laser irradiation condition while maintaining film uniformity. Photothermal heating effectively assisted by interfacial photoconversion layers is critical for phase transformation without beam damage of multilayered device structures. Notably, laser crystallization attains higher device performances than conventional thermal annealing. Fast laser crystallization with manufacture lev...read more
Citations
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Journal ArticleDOI
Synthetic Approaches for Halide Perovskite Thin Films.
TL;DR: This comprehensive review explores how the unique chemistry of halide perovskites can be exploited to tailor film growth processes and highlights the connections between processing methods and the resulting film characteristics.
Journal ArticleDOI
Highly Efficient Light-Emitting Diodes of Colloidal Metal–Halide Perovskite Nanocrystals beyond Quantum Size
Young-Hoon Kim,Christoph Wolf,Young Tae Kim,Himchan Cho,Woosung Kwon,Sungan Do,Aditya Sadhanala,Chan Gyung Park,Shi-Woo Rhee,Sang Hyuk Im,Richard H. Friend,Tae-Woo Lee +11 more
TL;DR: This work demonstrates highly efficient light-emitting diodes (LEDs) based on the colloidal perovskite nanocrystals (NCs) in a dimension > DB (regime beyond quantum size) by using a multifunctional buffer hole injection layer (Buf-HIL).
Journal ArticleDOI
Recent advances in hybrid organic-inorganic materials with spatial architecture for state-of-the-art applications
TL;DR: In this article, the formation mechanism of hybrid organic-inorganic (HOI) materials, including chemical synthesis approaches, and their functional performance could be controlled using structural and compositional designs.
Journal ArticleDOI
Flexible Piezoelectric Acoustic Sensors and Machine Learning for Speech Processing.
Younghoon Jung,Seong Kwang Hong,Hee Seung Wang,Jae Hyun Han,Trung X. Pham,Hyunsin Park,Junyeong Kim,Sunghun Kang,Chang D. Yoo,Keon Jae Lee +9 more
TL;DR: Significant developments in speech recognition are reviewed in terms of flexible piezoelectric materials, self‐powered sensors, machine learning algorithms, and speaker recognition.
Journal ArticleDOI
Perovskite solar cells - An overview of critical issues
Aleksandra B. Djurišić,Fangzhou Liu,Ho Won Tam,Man Kwong Wong,Annie Ng,Charles Surya,Wei Chen,Wei Chen,Zhubing He +8 more
TL;DR: Lifetime and stability are identified as the key issue to be addressed for wide scale applications, and the majority of environmental impact is due to the use of organic solvents or other components in the device, not the lead-containing perovskite absorber.
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
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.