Affan N. Iqbal
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View article: Nanoscale heterophase regulation enables sunlight-like full-spectrum white electroluminescence
Nanoscale heterophase regulation enables sunlight-like full-spectrum white electroluminescence Open
Traditional white light-emitting diodes operate by exciting phosphors using blue light-emitting diodes, leading to the absence of specific colour bands compared with the visible light region of the sunlight spectrum (400-780 nm), and exces…
View article: Correction to: Imaging Light‐Induced Migration of Dislocations in Halide Perovskites with 3D Nanoscale Strain Mapping
Correction to: Imaging Light‐Induced Migration of Dislocations in Halide Perovskites with 3D Nanoscale Strain Mapping Open
Owing to an error in properly normalizing the reconstruction phase data into atomic displacements, the strain values that we used to calculate the root mean squared local strain, εrms, and to calculate the fraction of the crystals more str…
View article: Composition Dictates Octahedral Tilt and Photostability in Halide Perovskites
Composition Dictates Octahedral Tilt and Photostability in Halide Perovskites Open
Halide perovskites are excellent candidate materials for use in solar cell, LED, and detector devices, in part because their composition can be tuned to achieve ideal optoelectronic properties. Empirical efficiency optimization has led the…
View article: Imaging Light‐Induced Migration of Dislocations in Halide Perovskites with 3D Nanoscale Strain Mapping
Imaging Light‐Induced Migration of Dislocations in Halide Perovskites with 3D Nanoscale Strain Mapping Open
In recent years, halide perovskite materials have been used to make high‐performance solar cells and light‐emitting devices. However, material defects still limit device performance and stability. Here, synchrotron‐based Bragg coherent dif…
View article: Visualising nanoscale bias-induced degradation in halide perovskite solar absorbers
Visualising nanoscale bias-induced degradation in halide perovskite solar absorbers Open
Halide perovskite absorbers show enormous potential for next-generation photovoltaic technologies, yet fundamental material degradation mechanisms under operation remain poorly understood. Here, the operational degradation mechanisms in fo…
View article: Imaging Light-Induced Migration of Dislocations in Halide Perovskites with 3D Nanoscale Strain Mapping
Imaging Light-Induced Migration of Dislocations in Halide Perovskites with 3D Nanoscale Strain Mapping Open
In recent years, halide perovskite materials have been used to make high performance solar cell and light-emitting devices. However, material defects still limit device performance and stability. Here, we use synchrotron-based Bragg Cohere…
View article: Comparative Effects of Pre-Operative Versus Post Operative Shoulder Rehabilitation Program Mastectomy Patients; A Cross Sectional Survey
Comparative Effects of Pre-Operative Versus Post Operative Shoulder Rehabilitation Program Mastectomy Patients; A Cross Sectional Survey Open
Breast cancer is ranked the top in types of cancer that affects internationally. It affects up to 1 in 13 women during their lifetime. Physiotherapy is one of the major sources of recovery in patients of Mastectomy in terms of pain, ranges…
View article: Stabilized tilted-octahedra halide perovskites inhibit local formation of performance-limiting phases
Stabilized tilted-octahedra halide perovskites inhibit local formation of performance-limiting phases Open
Stable but not quite cubic The black, photoactive phase of formamidinium (FA) perovskites, which is usually stabilized by cation alloying to avoid the formation of inactive hexagonal phases, is assumed to be cubic. High-resolution microsco…
View article: Local Nanoscale Defective Phase Impurities Are the Sites of Degradation in Halide Perovskite Devices
Local Nanoscale Defective Phase Impurities Are the Sites of Degradation in Halide Perovskite Devices Open
Halide perovskites excel in the pursuit of highly efficient thin film photovoltaics, with power conversion efficiencies reaching 25.5% in single junction and 29.5% in tandem halide perovskite/silicon solar cell configurations. Operational …
View article: Local Nanoscale Defective Phase Impurities Are the Sites of Degradation\n in Halide Perovskite Devices
Local Nanoscale Defective Phase Impurities Are the Sites of Degradation\n in Halide Perovskite Devices Open
Halide perovskites excel in the pursuit of highly efficient thin film\nphotovoltaics, with power conversion efficiencies reaching 25.5% in single\njunction and 29.5% in tandem halide perovskite/silicon solar cell\nconfigurations. Operation…
View article: Strain-gradient mediated local conduction in strained bismuth ferrite films
Strain-gradient mediated local conduction in strained bismuth ferrite films Open
It has been recently shown that the strain gradient is able to separate the light-excited electron-hole pairs in semiconductors, but how it affects the photoelectric properties of the photo-active materials remains an open question. Here, …