Recent advances in interfacial engineering of perovskite solar cells

Ye, Meidan; He, Chang; Iocozzia, James; Liu, Xueqin; Cui, Xun; Meng, Xiangtong; Rager, Matthew; Hong, Xiaodan; Li, Xiangyang; Lin, Zhiqun

doi:10.1088/1361-6463/aa7cb0

Cited by 140 publications

(82 citation statements)

References 192 publications

(248 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As anticipated, MAPbI 3 –PbS QD hybrid films demonstrate a small increase of the absorption in the visible spectrum range, and an extended absorption to the near‐infrared to 900 nm compared to that of the pure MAPbI 3 film. The increased absorption in the near‐infrared is probably due to narrower bandgap of PbS QDs and the shift of the band‐edge due to the small strain at the QD–MAPI 3 interface . Some broadening of the optical response toward the red is also observed in the incident photon‐to‐current efficiency (IPCE) spectra in Figure B.…”

Section: Resultsmentioning

confidence: 90%

Hybrid PbS Quantum‐Dot‐in‐Perovskite for High‐Efficiency Perovskite Solar Cell

Han

Luo

Yin

et al. 2018

Small

125

120

View full text Add to dashboard Cite

In this study, a facile and effective approach to synthesize high-quality perovskite-quantum dots (QDs) hybrid film is demonstrated, which dramatically improves the photovoltaic performance of a perovskite solar cell (PSC). Adding PbS QDs into CH NH PbI (MAPbI ) precursor to form a QD-in-perovskite structure is found to be beneficial for the crystallization of perovskite, revealed by enlarged grain size, reduced fragmentized grains, enhanced characteristic peak intensity, and large percentage of (220) plane in X-ray diffraction patterns. The hybrid film also shows higher carrier mobility, as evidenced by Hall Effect measurement. By taking all these advantages, the PSC based on MAPbI -PbS hybrid film leads to an improvement in power conversion efficiency by 14% compared to that based on pure perovskite, primarily ascribed to higher current density and fill factor (FF). Ultimately, an efficiency reaching up to 18.6% and a FF of over ≈0.77 are achieved based on the PSC with hybrid film. Such a simple hybridizing technique opens up a promising method to improve the performance of PSCs, and has strong potential to be applied to prepare other hybrid composite materials.

show abstract

Section: Resultsmentioning

confidence: 90%

Hybrid PbS Quantum‐Dot‐in‐Perovskite for High‐Efficiency Perovskite Solar Cell

Han

Luo

Yin

et al. 2018

Small

125

120

View full text Add to dashboard Cite

show abstract

“…As such, it is imperative to explore other thermodynamic routes rather than temperature to access novel metastable states with ambient stability, while protecting the materials from thermalinduced damage.Here, we use pressure, i.e., compression−decompression cycles, as an alternative thermodynamic method to drive materials to their metastable states that are not available via heating pathways. Analogous to a heating−cooling cycle that first elevates the entropy (disordering) of materials (6, 7), followed by deliberately reducing the entropy (ordering) to force the materials to be trapped in a metastable state, compression−decompression cycles can also control such an order → disorder → reordering process (8-12).Halide perovskite solar cells have attracted ever-growing scientific interest due to their superior photovoltaic properties and simple device manufacturing processes (13)(14)(15)(16). Moreover, 2D metal halide perovskites have become highly promising semiconductors because of their high degree of structural flexibility and tunable optoelectronic properties (17)(18)(19).…”

mentioning

confidence: 99%

“…Halide perovskite solar cells have attracted ever-growing scientific interest due to their superior photovoltaic properties and simple device manufacturing processes (13)(14)(15)(16). Moreover, 2D metal halide perovskites have become highly promising semiconductors because of their high degree of structural flexibility and tunable optoelectronic properties (17)(18)(19).…”

mentioning

confidence: 99%

Isothermal pressure-derived metastable states in 2D hybrid perovskites showing enduring bandgap narrowing

Liu

Gong

Kong

et al. 2018

Proc. Natl. Acad. Sci. U.S.A.

161

168

View full text Add to dashboard Cite

Materials in metastable states, such as amorphous ice and supercooled condensed matter, often exhibit exotic phenomena. To date, achieving metastability is usually accomplished by rapid quenching through a thermodynamic path function, namely, heating-cooling cycles. However, heat can be detrimental to organic-containing materials because it can induce degradation. Alternatively, the application of pressure can be used to achieve metastable states that are inaccessible via heating-cooling cycles. Here we report metastable states of 2D organic-inorganic hybrid perovskites reached through structural amorphization under compression followed by recrystallization via decompression. Remarkably, such pressure-derived metastable states in 2D hybrid perovskites exhibit enduring bandgap narrowing by as much as 8.2% with stability under ambient conditions. The achieved metastable states in 2D hybrid perovskites via compression-decompression cycles offer an alternative pathway toward manipulating the properties of these "soft" materials.

show abstract

“…By suppressing charge carrier recombination and improving the charge extraction efficiency at the interfaces, the PCE of p‐i‐n PSCs could be further improved. An interface modification of ETL and HTL is essential to optimize the energy‐level alignment for efficient electron and hole extraction, ensuring good ohmic contact, and improving the overall performance of the device …”

Section: Introductionmentioning

confidence: 99%

Improving the Performance of Perovskite Solar Cells using a Polyphosphazene Interfacing Layer

Hailegnaw

Poscher

Ulbricht

et al. 2019

Physica Status Solidi (a)

View full text Add to dashboard Cite

Herein, the impact of thin layer of polyphosphazene derivatives, as a buffer layer between the electron‐transporting layer and the back metal‐contact in mixed‐cation mixed‐halide perovskite solar cells (PSCs), is explored. PSCs with a poly[bis(allylamino)phosphazene] (PPz) interlayer exhibit enhanced rectification in the photo‐induced current density–voltage (J–V) curves, which show improved photovoltaic performance and photostability with reduced hysteresis. The thickness of the interlayer is optimized and the optimized PSCs with PPz buffer layer shows an average open‐circuit voltage (VOC) of ≈1.05 V, a short‐circuit current density (JSC) of around 23.5 mA cm−2, a fill factor of ≈72%, and a power conversion efficiency of about 17.3% for the forward and reverse scans under simulated AM1.5G illumination. Moreover, the application of PPz as an electron‐transporting interlayer in organic solar cells reveals that PPz interfacial layer improves the electron extraction at the cathode. The merit of applying PPz interlayer extends to the possibility of using different metals (such as aluminum, gold, copper, and silver) as the top contact in the prepared PCSs. In general, these experiments reveal a very promising approach to tackle the issue of interfacing, and to improve the performance and stability of PSCs.

show abstract

Recent advances in interfacial engineering of perovskite solar cells

Cited by 140 publications

References 192 publications

Hybrid PbS Quantum‐Dot‐in‐Perovskite for High‐Efficiency Perovskite Solar Cell

Hybrid PbS Quantum‐Dot‐in‐Perovskite for High‐Efficiency Perovskite Solar Cell

Isothermal pressure-derived metastable states in 2D hybrid perovskites showing enduring bandgap narrowing

Improving the Performance of Perovskite Solar Cells using a Polyphosphazene Interfacing Layer

Contact Info

Product

Resources

About