Laser Crystallization of Organic–Inorganic Hybrid Perovskite Solar Cells

Jeon, Taemin; Jin, Hyeong Min; Lee, Seung Hyun; Lee, Jun Young; Park, Hyung Il; Kim, Mi Kyung; Lee, Keon Jae; Shin, Byungha; Kim, Sang Ouk

doi:10.1021/acsnano.6b03815

Cited by 131 publications

(93 citation statements)

References 53 publications

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“…With the doping contents up to 1.0% (showed in Figure c), grains size is enlarged compared to those without Li addition (Figure a) under the similar annealing condition. The grain morphology with 1.0 mol% Li doping has obvious strips that are also observed in laser crystallization of organic–inorganic hybrid perovskite thin film and beneficial to reducing reflection of light. Further enhancing Li contents to 1.5 mol% resulted to the discontinuity of thin films and some voids and holes appeared (Figure d).…”

Section: Resultsmentioning

confidence: 86%

Organic–Inorganic Hybrid Perovskite with Controlled Dopant Modification and Application in Photovoltaic Device

Zhao

Yang

Liu

2017

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Organic-inorganic hybrid perovskite as a kind of promising photovoltaic material is booming due to its low-cost, high defect tolerance, and easy fabrication, which result in the huge potential in industrial production. In the pursuit of high efficiency photovoltaic devices, high-quality absorbing layer is essential. Therefore, developing organic-inorganic hybrid perovskite thin films with good coverage, improved uniformity, and crystalline in a single pass deposition is of great concern in realizing good performance of perovskite thin-film solar cell. Here, it is found that the introduction of suitable amounts of LiI plays a dramatically positive role in enlarging the grain size and reducing the grain boundaries of absorbing layer. In addition, the carrier lifetime and built-in potential of the LiI doped perovskite device are observed to increase. Thus, it leads to about 15% gain in solar cell efficiency comparing to that without the LiI doping. Meanwhile, a hysteresis reduction is observed and 18.16% power conversion efficiency is achieved in LiI doped perovskite device, as well.

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Section: Resultsmentioning

confidence: 86%

Organic–Inorganic Hybrid Perovskite with Controlled Dopant Modification and Application in Photovoltaic Device

Zhao

Yang

Liu

2017

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“…Recently, organic-inorganic metal halide perovskites have attracted much interest from the scientific community for various applications, including solar cells, [1][2][3][4][5][6][7][8][9][10][11][12] lasers, [13][14][15] light emitting diodes (LED), [16][17][18] water splitting, [19,20] photodetectors, [21][22][23][24][25] field-effect transistors, [26][27][28][29][30] nonvolatile memory, [31,32] capacitors, [33] battery, [34,35] optical amplifiers, [36] lasing, [37][38][39] and laser cooling. [40] They are now considered the most exceptional materials due to their high efficiency and ease in fabrication, and the materials used to form perovskite are extensively available and inexpensive.…”

Section: Introductionmentioning

confidence: 99%

Low‐Dimensional Perovskites: From Synthesis to Stability in Perovskite Solar Cells

Yusoff

Nazeeruddin

2017

Advanced Energy Materials

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ruthenium molecular dye, wide absorption range, direct and tunable bandgaps, superior charge carrier mobility, and long carrier diffusion length. [6,[43][44][45] Although it has been synthesized for over 100 years, Mitzi et al. were the first to investigate the electrical properties of tin-based perovskite in 1994, [46] which was later used in numerous devices, including field effect transistors (FETs) and LEDs. [47][48][49] The attention toward metal halide perovskites sparked yet again in 2009, [42] and they were later named one of the most promising emerging technologies in 2016. In brief, metal halide perovskites can be divided into two types based on their crystal structure motif: (i) 3D-structured perovskite (AMX 3 ) and (ii) 2D-structured perovskite (A 2 MX 4 ). The structure of the perovskite could either be 2D or 3D, while the dimensions of the perovskite probably belong to 0D-3D. The term "perovskite" implies to the general class of materials derived from an elemental composition of AMX 3 and demonstrates the crystal structure of perovskite crystal CaTiO 3 , where the divalent metal M resides at the body center and surrounded by six X-anions located at the face centers in an octahedral cluster. The MX 6 in the octahedral cluster may form an extended 3D structure by all-corner-connected type with A-cation sitting at the center. It could also form a 2D perovskite when the 3D perovskite network is cut into one-layer-thick slices along the 〈100〉 direction and separates them apart. In principle, 2D perovskite is the easiest to synthesize because of its natural layered structure, which is held together by weak van der Waals forces. Dou et al. reported the large-scale synthesis of the monolayer (C 4 H 9 NH 3 ) 2 -PbBr 4 by a chemical method. [50] Along the same lines, several groups have prepared and characterized nanomaterials composed of various forms of perovskites. [51][52][53] Also, our group has recently successfully prepared a low-dimensional mixed 2D/3D perovskite using the protonated salt of amino valeric acid iodide (AVAI) as an organic precursor mixed with PbI 2 , in which a yellowish film was containing needle-like crystallite formed. [54] In this topical review, we present the latest advances in the synthesis of low-dimensional perovskites and the growth mechanism to develop a strategy to achieve best performing devices. Later, we focus the instability and a cost-effective solution to circumvent this problem, which is vital for the eventual deployment of perovskite solar cells to consumers market. We present an analysis of the origins for instability in perovskite solar cells, and present a summary of the main achievements and possible future developments of these low-dimensional perovskite. [2,55] Perovskite solar cells have been heralded as one of the most promising emerging technologies in 2016 because of the very high power conversion efficiency of 22% and the low cost of generating electricity compared to even fossil fuels. These are formed with various dimensionalities and can be fully mani...

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“…In this work, we employed a near‐infrared (NIR) (1064 nm, Nd:YVO 4 ) laser for LDW of the non‐PVSK phase CsPbIBr 2 film deposited on an interfacial layer (ITO or Ag). This method can precisely control the heating temperature and crystallization process without damage by the laser beam . Figure a presents the schematic configuration of the LDW experimental setup.…”

Section: Resultsmentioning

confidence: 99%

Nonvolatile Rewritable Photomemory Arrays Based on Reversible Phase‐Change Perovskite for Optical Information Storage

Zou

Zheng

Chang

et al. 2019

Advanced Optical Materials

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devices combine both functions of photosensors and memories, and thus simplify the device structure by eliminating the demand for additional memory components to store the output of the photosensors. [5] Recently, metal halide perovskite has attracted much research interest due to its outstanding optoelectronic properties including exceptional optical absorption, high carrier mobility, and long carrier lifetime. [6,7] These characteristics have promoted its fast development in photosensing devices including photovoltaics, [8] photodetectors, [9][10][11] and phototransistors. [12] However, most of these perovskite photosensing devices only convert the light illumination to transient electrical signals, requiring another processing component to store the output signals for recording light information. More recently, perovskitebased photon-programmed memory was developed using the floating-gate transistor architecture. [13,14] However, these memory behaviors relied on the trapping of photoinduced charges in the perovskite surrounded by insulating polymer matrix, which could not last for a long time (1000 s). In this work, we utilized the photochromic all-inorganic perovskite CsPbIBr 2 to demonstrate a nonvolatile, rewritable, photon-programmed memory array for optical information storage.The photomemory (PM) pixel is composed of an Ag interdigitated electrode (IDE) and vapor-deposited perovskite film atop. The reversible phase transitions of vapor-deposited CsPbIBr 2 films between the perovskite (PVSK) phase and non-perovskite (non-PVSK) phase were achieved through laser heating/moisture exposure cycles. The two different phases correspond to significant distinctions in optoelectronic properties including photoluminescence (PL), optical absorption, refractive index, charge transport, etc. [15,16] Instead of heating all PM pixels together on a heater platform, a Nd:YVO 4 laser (λ = 1064 nm) was used to generate heat selectively in specific PM pixels through the photothermal effect in Ag, [17] which made the transition from the non-PVSK to PVSK phase site-selectable. The PM pixel in the PVSK phase showed a high responsivity up to 1.5 A W −1 with a broad absorption spectrum from 350 to 600 nm.The high transmission speed of optical signals and their application in optical computation have created a growing demand for photon-programmed memory devices. Rather than using electrical pulses to store data in one of two states, the photomemory (PM) devices exploit the optical stimulation to store the light information. In this work, the application of a nonvolatile rewritable PM array using the photochromic inorganic perovskite CsPbIBr 2 grown by a vapor-deposition process is demonstrated. Reversible phase transitions between orthorhombic (δ) and cubic (α) phases are achieved in CsPbIBr 2 films through laser-induced heat and moisture exposure. The PM pixels in an optically absorbing perovskite phase exhibit ≈50-fold photoresponsivity as large as those in a transparent-colored non-perovskite phase. Storing optical data are achi...

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Laser Crystallization of Organic–Inorganic Hybrid Perovskite Solar Cells

Cited by 131 publications

References 53 publications

Organic–Inorganic Hybrid Perovskite with Controlled Dopant Modification and Application in Photovoltaic Device

Organic–Inorganic Hybrid Perovskite with Controlled Dopant Modification and Application in Photovoltaic Device

Low‐Dimensional Perovskites: From Synthesis to Stability in Perovskite Solar Cells

Nonvolatile Rewritable Photomemory Arrays Based on Reversible Phase‐Change Perovskite for Optical Information Storage

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