Based on the above results and discussion, we establish that the key issue that limits the film quality, photophysical properties, and overall photovoltaic efficiency is control over the perovskite phase transition when moving from a spin-coating process to a printing process.
Perovskite phase transition from solution to solid state was investigated Intermediate phase rules the transitioning from spin-coating to printing processes High photovoltaic performance was obtained for printed MAPbI 3 devices
Simple and scalable fabrication is a vibrant prospect to be exploited further for perovskite solar cells. However, understanding and control over the phase transition including structural evolution and crystal growth mechanisms are missing when moving a spin-coating to a printing process.
Intensive studies involving ex situ observation highlight the key role of the phase transition on the perovskite surface morphology, 13, 14, 15, 16, 17 while the phase transition during solution-casting is poorly understood.
High efficiency and long-term stability are vital for further development of perovskite solar cells (PSCs). PSCs based on cesium lead halide perovskites exhibit better stability but lower power conversion efficiencies (PCEs), compared with organic-inorganic hybrid perovskites.
Unpackaged device can maintain 92% of its initial efficiency after operation at maximum power point under simulated air mass 1.5 G irradiation for 550 h. The power conversion efficiency (PCE) of perovskite solar cells (PSCs) has reached a certified record value of 26% 1.
The solar cell stability for humidity, light, and thermal stability are significantly improved. The MASCN treated FAPbI 3 achieves a PCE of 15.32% on a PSC module with an effective area of 9.6 cm 2 and maintains an initial …
Tunable crystal growth offering highly aligned perovskite crystallites with suppressed deep-level defects is vital for efficient charge transport, which in turn significantly …
Herein, through extensive in situ investigations as well as film and device characterizations, we elucidate the perovskite phase transition for both spin-coating and blade …
Quarti, C. et al. Structural and optical properties of methylammonium lead iodide across the tetragonal to cubic phase transition: implications for perovskite solar cells. …
Song, Z. et al. Perovskite solar cell stability in humid air: partially reversible phase transitions in the PbI 2-CH 3 NH 3 I-H 2 O system. Adv. Energy Mater. 6, 1600846 (2016).
4 · The α-to-δ phase transition and lattice defects pose significant challenges to the long-term stability of methylammonium (MA)/bromide (Br)-free formamidinium (FA)-based …
The planar perovskite solar cells based on air-printed CH 3 NH 3 PbI 3 (MAPbI 3) films exhibit PCEs of 18.74% (0.09 ... we investigated the perovskite phase transition in real …
Here we reveal fundamental insights into the perovskite phase transition when moving between spin-coating and printing processes, providing a rational path toward optimization of printed devices.
Here we reveal fundamental insights into the perovskite phase transition when moving between spin-coating and printing processes, providing a rational path toward …
perovskite (HOIP) solar cells have recently emerged as a highly promising and inexpensive solution for sustainable energy. Simple and scalable fabrication is a vibrantprospect to be …
Herein, a "precursor to perovskite-like template to perovskite" (PPP) growth strategy is developed, using either MAAc or GuaCl precursor to induce a sacrificial …
This approach eliminates the need for intermediate-phase transitions, promotes sufficient precursor reactions, and facilitates the formation of highly oriented α-phase …
High efficiency and long-term stability are vital for further development of perovskite solar cells (PSCs). PSCs based on cesium lead halide perovskites exhibit better …
Cs 3 Bi 2 I 9 is a promising inorganic, nontoxic, and stable perovskite material for solar cell applications, but the power conversion efficiency of Cs 3 Bi 2 I 9-based solar cells is relatively low because its band gap is too …
Herein, through extensive in situ investigations as well as film and device characterizations, we elucidate the perovskite phase transition for both spin-coating and blade …
The notable advancements in boosting the power conversion efficiency (PCE) of formamidinium-based perovskite solar cells are progressively underscoring their commercialization potential. …
2 33 Perovskite solar cell, derivative phases, CsPbBr 3, phase transition, recrystallization, 34 vapor deposition 35 36 1. Introduction 37 The incredible development of organic-inorganic …
Phase transition dynamics are an important concern in the wide applications of metal halide perovskites, which fundamentally determine the optoelectronic properties and …
The solar cell stability for humidity, light, and thermal stability are significantly improved. The MASCN treated FAPbI 3 achieves a PCE of 15.32% on a PSC module with an …
To obtain highly efficient and stable perovskite solar cells (PSCs), defects must be removed at the grain boundaries of the perovskite films. Most surface-treatment methods …
Here, the authors reveal the degradation pathway, introduce water-insoluble compact layer to suppress α-phase collapse, and achieve maximum efficiency over 25% for …
4 · The α-to-δ phase transition and lattice defects pose significant challenges to the long-term stability of methylammonium (MA)/bromide (Br)-free formamidinium (FA)-based …
Tunable crystal growth offering highly aligned perovskite crystallites with suppressed deep-level defects is vital for efficient charge transport, which in turn significantly …