Electrical, Optical, and Structural Characteristics of CH3NH3PbI3Perovskite Light‐Emitting Diodes

Oh, Min Seok; Jo, Seungil; Parida, Bhaskar; Singh, Arjun; Ko, Keum‐Jin; Kang, Jae‐Wook; Kim, Hyunsoo

doi:10.1002/pssa.201701014

Cited by 4 publications

(11 citation statements)

References 41 publications

(46 reference statements)

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“…[ 66 ] Different electron transport layers also significantly affect V RB . It is found that the breakdown voltage of the device with the structure ITO/ZnO/MAPbI 3 /spiro‐OMeTAD/Ag can reach −5.4 V, [ 11 ] which is similar with that of the PCBM ETL based PSC and far greater than TiO 2 based PSCs (about −0.5 V), as shown in Table 1. [ 11,30,31 ] Xiong et al.…”

Section: Currently Reported Strategies For Improving the Reverse Bias...mentioning

confidence: 82%

“…It is found that the breakdown voltage of the device with the structure ITO/ZnO/MAPbI 3 /spiro‐OMeTAD/Ag can reach −5.4 V, [ 11 ] which is similar with that of the PCBM ETL based PSC and far greater than TiO 2 based PSCs (about −0.5 V), as shown in Table 1. [ 11,30,31 ] Xiong et al. [ 96 ] inserted a NdCl 3 interlayer at the perovskite/ETL interface and found that it not only blocked the migration of I − to the ETL but also resulted in a decreased defect density of the perovskite layer.…”

Section: Currently Reported Strategies For Improving the Reverse Bias...mentioning

confidence: 82%

“…(d) Reproduced with permission. [ 11 ] Copyright 2018, Wiley‐VCH. Breakdown of p‐i‐n type devices in e) dark state (defined as reverse current of 1 mA cm −2 ) and f) J–V curves of device with increasing reverse bias under illumination state, and the illustration shows our experimental results at −10 V. The performance loss is serious when reverse voltage is larger than the V RB .…”

Section: Introductionmentioning

confidence: 99%

“…Compared with the other two, the positive feedback effect of elevated temperature and increased reverse current during thermal breakdown can eventually cause the irreversibly damage of the solar cell as can be seen by the naked eye (Figure 2e). Therefore, low reverse bias stability of PSCs may limit their application, [10,11,22,23] which requires in-depth research.…”

Section: Introductionmentioning

confidence: 99%

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Perovskite Solar Cells in the Shadow: Understanding the Mechanism of Reverse‐Bias Behavior toward Suppressed Reverse‐Bias Breakdown and Reverse‐Bias Induced Degradation

Wang

Huang

Zhou

et al. 2023

Advanced Energy Materials

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to be connected in series to output larger voltage. Like any classical solar cell, when PSCs are connected in series for largearea modules and panels applications, special attention should be paid to the reverse bias electrical stress of the subcells, because excessive reverse bias due to shading effect (Figure 1a,b) is detrimental to the whole module. In the real environment, external factors such as trees, vegetation, dead leaves, wildlife, snow, and dark clouds will shade some units of the modules from the sun light, leading to the shading effect. For PSCs in modules, the shaded cells can be under reverse bias supplied by the other solar light irradiated cells, [2] as the photocurrent of the illuminated cells can flow to the shaded cells as a reverse current (Figure 1c,d), resulting in power dissipation and subcells thermal degradation that deteriorates the power output of the whole panel. [4][5][6] Joule heat generated in this process will even lead to the local irreversible thermal breakdown of the subcells in the shadow. [7][8][9] At present, however, the reverse bias stability issues of PSCs have not been systematically studied yet. Thus, investigating the phenomenon and mechanism of reverse bias behavior of PSCs, as well as the mechanism of reverse bias breakdown, with anticipating to improve the reverse stability of PSCs, is urgently necessary to promote the commercial application of PSCs.Generally, the overall performance of a solar module and panel depends on the beneficial performance of each individual subcell. Four essential parameters measuring the photovoltaic performance of a solar cell are PCE, FF, V oc , and J sc . In actual testing, these parameters are obtained under forward bias scan, which leads to more attention focusing on the forward bias portion of J-V curve than the reverse bias region. It is worth noting that the investigation of the reverse bias region of J-V curve is equally important, as the p-n junction characteristics of the PSCs is also reflected in their reverse bias behavior. [13][14][15][16][17][18] It has been reported that the reverse current density of classical solar cells (such as Si and CIGS) starts to increase abruptly when the reverse bias voltage is large In recent years, the power conversion efficiencies of halide perovskite solar cells (PSCs) have reached 25.7%. Further commercialization puts forward higher requirements for the stability of PSCs under different stresses. Current research on the stability of PSCs predominantly focuses on investigating the effects of temperature, humidity, oxygen, ultraviolet light, and electrical bias stress, while stability under reverse bias has been poorly studied among the many factors. When large-area application of PSCs panels occurs, the shading effect and local hot spots of PSCs modules in real scenarios all indicate that the research on reverse bias stability of PSCs is urgently needed. Within this review, a bird's-eye view of the recent advances on the reverse bias stability issue and reverse bias behavior of PSCs is obtai...

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Section: Currently Reported Strategies For Improving the Reverse Bias...mentioning

confidence: 82%

Section: Currently Reported Strategies For Improving the Reverse Bias...mentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Perovskite Solar Cells in the Shadow: Understanding the Mechanism of Reverse‐Bias Behavior toward Suppressed Reverse‐Bias Breakdown and Reverse‐Bias Induced Degradation

Wang

Huang

Zhou

et al. 2023

Advanced Energy Materials

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show abstract

“…[ 10–12 ] Other applications based on perovskite such as photodetectors, lasers, and light‐emitting diodes have also been widely studied. [ 13–17 ]…”

Section: Introductionmentioning

confidence: 99%

Hybrid Lead Halide Perovskite Films with Large Grain Size Via Spin‐Coating Free Fabrication

Liu

et al. 2021

Physica Status Solidi (a)

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Herein, a spin‐coating‐free method to deposit CH3NH3PbI3 perovskite films with large grains is demonstrated. The effect of processing temperature on the property of hybrid lead halide perovskite films is investigated. It is found that the grain domain size is enlarged by increasing processing temperature. Dense and uniform CH3NH3PbI3 films with grain domain size close to 1 mm are obtained using this method. A higher processing temperature also promotes the conversion from precursors solution to perovskite, but excessive temperature induces a poor crystalline state. About 150 °C is proved to be close to the optimal processing temperature to form perovskite films with less defect density, lower charge recombination, and longer charge carrier lifetimes. Space‐charge‐limited current method is used to investigate the charge transport efficiency based on CH3NH3PbI3 perovskite films. The results show that both the electron and hole mobility improve remarkably as the processing temperature increases.

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Effect of Metal–Organic Frameworks with Different Ligand Structures (ZIF-11 & ZIF-23) on the Optoelectronic Performance of Perovskite Photodetectors

Guan,

Cheng,

Ning

et al. 2024

ACS Appl. Mater. Interfaces

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Crystal engineering using passivation to reduce perovskite defects is crucial to improving the quality of perovskite crystals and optoelectronic properties. Because of their unique properties, metal−organic framework materials have been used as an emerging and effective passivator for perovskite materials and optoelectronic devices. This paper focuses on the differences in the optoelectronic properties of zeolite imidazolium ester framework materials (ZIF-11 & ZIF-23) doped with different conjugated ring ligands for perovskite photodetectors. This paper proposes a simple and effective method to dope zeolite imidazolium ester framework nanoparticles (ZIF-11 & ZIF-23) into organic−inorganic perovskite MAPbI 3 films. The crystalline quality of the perovskite films was improved after doping with ZIF-11 and ZIF-23. Meanwhile, the performance of the planar photoconductive devices was significantly improved. The photoresponsivity of the photodetector doped with ZIF-23 was 0.185A/W, and the detectivity was 4.22 × 10 12 Jones. The photoresponsivity of the photodetector doped with ZIF-23 was 0.164 A/W, and the detectivity was 3.27 × 10 12 Jones. The devices maintained long-time operational stability, operating without significant degradation for 480 s under the 1.2 V bias voltage operating condition. In addition, we observed a significant suppression of the ion migration process in ZIF-23 for a voltage-controlled ion migration process. The potential application of perovskite and MOF heterojunction materials for image information acquisition and storage is demonstrated.

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Electrical, Optical, and Structural Characteristics of CH₃NH₃PbI₃Perovskite Light‐Emitting Diodes

Cited by 4 publications

References 41 publications

Perovskite Solar Cells in the Shadow: Understanding the Mechanism of Reverse‐Bias Behavior toward Suppressed Reverse‐Bias Breakdown and Reverse‐Bias Induced Degradation

Perovskite Solar Cells in the Shadow: Understanding the Mechanism of Reverse‐Bias Behavior toward Suppressed Reverse‐Bias Breakdown and Reverse‐Bias Induced Degradation

Hybrid Lead Halide Perovskite Films with Large Grain Size Via Spin‐Coating Free Fabrication

Effect of Metal–Organic Frameworks with Different Ligand Structures (ZIF-11 & ZIF-23) on the Optoelectronic Performance of Perovskite Photodetectors

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