Intermixing-seeded growth for high-performance planar heterojunction perovskite solar cells assisted by precursor-capped nanoparticles

Li, Shao Sian; Chang, Chih-Hsin; Wang, Ying-Chiao; Lin, Chih‐Hsun; Wang, Di Yan; Lin, Jou-Chun; Chen, Chia Chun; Sheu, Hwo‐Shuenn; Chia, Hao-Chung; Wu, Wei-Ru; Jeng, U‐Ser; Liang, Chi‐Te; Sankar, Raman; Chou, F. C.; Chen, Chun-Wei

doi:10.1039/c5ee03229f

Cited by 164 publications

(134 citation statements)

References 37 publications

Supporting

Mentioning

129

Contrasting

Order By: Relevance

“…As a result, crystallites of significant smaller size are obtained. In case of PbHPO 3 NPs containing precursors, we propose a mechanism similar to the one from Li et al who reported the functionality of PbS nanocrystals for a nucleation‐assisted growth of perovskite domains in thin films. As a result, obtained crystallite domains were larger if compared with c‐MAI‐based precursor as well as enhanced crystallinity supported by XRD (Figure i) and photophysical study ( Figure a,b).…”

Section: Resultssupporting

confidence: 65%

“…Such devices demonstrate higher efficiency compared to the ones produced from stoichiometric precursor, because films with larger perovskite domains display better crystal quality due to reduced area of grain boundaries (GB) and therefore less defects. Li et al have also demonstrated that direct incorporation of the PbS nanoparticles (NPs) with the size of 5 nm creates nucleation sites for larger perovskite crystal domain. These data inspired us for a deeper study of the perovskite precursor system to ultimately understand the nature of the impurities and their impact on perovskite film formation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Deciphering the Role of Impurities in Methylammonium Iodide and Their Impact on the Performance of Perovskite Solar Cells

Levchuk

Hou

Gruber

et al. 2016

Adv Materials Inter

View full text Add to dashboard Cite

Solution‐based perovskite solar cell fabrication typically involves rather complex processing sequences to yield highest performance. While most studies concentrate on the exploration of processing conditions, the purity levels of common perovskite precursor solutions have been investigated and a number of impurities that are critically important toward controlling the crystallization of perovskites are found. In this study, an in‐depth chemical study of the possible impurities formed during CH3NH3I preparation is presented and their relevance on solar cell processing is revealed. A primary consideration is the chemical transformation of hypophosphorous acid, which plays the role of the stabilizer for HI. The detrimental role of the impurities is best demonstrated by comparing perovskite solar cell devices fabricated from impurity‐free precursors versus precursors containing different concentrations of impurities. Most interestingly, it is revealed that a certain concentration of impurities is detrimental to the growth of large‐grained crystals. PbHPO3 nanoparticles, which are formed after hypophosphorous acid transformation, actually cause crystal domain growth through serving as a nucleation center. This study gives valuable insight into the rate determining steps of perovskite crystal growth and further provides the basis for developing reliable and reproducible high‐performance recipes for perovskite solar cell processing.

show abstract

Section: Resultssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Deciphering the Role of Impurities in Methylammonium Iodide and Their Impact on the Performance of Perovskite Solar Cells

Levchuk

Hou

Gruber

et al. 2016

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…In addition to the surface passivation ligands with low lattice mismatch, high‐quality, large‐scale grain and nonporous perovskite films incorporated with QDs could benefit hybrid photodetectors. Li et al and Thi Tuyen et al independently reported that the nucleation and growth of perovskite crystal grain size can be effectively tuned by the embedded PbS QDs. Li et al demonstrated the QDs play a crucial role in the nucleation of perovskite crystals via an intermixing‐seeded growth technique.…”

Section: Hybrid Structure Of Halide‐perovskite‐based Photodetectorsmentioning

confidence: 99%

“…Li et al and Thi Tuyen et al independently reported that the nucleation and growth of perovskite crystal grain size can be effectively tuned by the embedded PbS QDs. Li et al demonstrated the QDs play a crucial role in the nucleation of perovskite crystals via an intermixing‐seeded growth technique. Thi Tuyen et al found that the grain size of perovskite films with QDs was 4.5‐fold larger than that of pristine perovskite films.…”

Section: Hybrid Structure Of Halide‐perovskite‐based Photodetectorsmentioning

confidence: 99%

Recent Advances in Halide Perovskite Photodetectors Based on Different Dimensional Materials

Wangyang

Gong

Rao

et al. 2018

Advanced Optical Materials

122

View full text Add to dashboard Cite

Based on the understanding and control of the energy levels and density of defect states of 0D, 1D, 2D, and 3D materials, halide perovskite photodetectors (HPPDs) based on different dimensional materials have recently gained significant achievements. In addition, the detection range of HPPDs even extended from ultraviolet–visible–near infrared (UV–vis–NIR) to X/γ photons, and the self‐powered HPPDs also became a hot issue. In this review, a comprehensive summary of the recent advances in HPPDs based on different dimensional materials is proposed, including 0D, 1D, 2D, and 3D perovskite and nonperovskite (without perovskite ABX3 crystal structure) materials, focusing on the relationship among the charge‐carrier transport, operation mechanism, device architectures, and photodetecting performances. First, an introduction of composition and crystal structures of HPPDs is given, followed by the description of their key figure‐of‐merit parameters evaluation system. Next, the recent developments of HPPDs based on different dimensional materials are highlighted. And finally, the characteristics of HPPDs depending on the dimensionality are summarized, and the potential challenges and approaches for future study are also presented.

show abstract

“…With the aid of ultraviolet-ozone treatment for FTO, the perovskite film exhibited large grains, a low density of pin holes, as well as a smooth surface. Li and co-workers [33] demonstrated a novel intermixing-seeded growth technique to obtain high-performance planar heterojunction PSCs (Figs 3c-f). Through interfacial engineering with ligand-exchange treatment, a small amount of methylammonium iodide (MAI)-capped PbS nanoparticles intermixed with the perovskite precursor solution, serving as nucleation sites to promote the formation of the inorganic framework of perovskite lattice structures.…”

Section: Conventional Structured Pscsmentioning

confidence: 99%

Progress of interface engineering in perovskite solar cells

Niu

2016

Sci. China Mater.

View full text Add to dashboard Cite

Organic-inorganic hybrid halide perovskite materials have been a suitable active layer in solar cells due to the extraordinary photonic and electronic properties. Perovskite solar cells (PSCs), no matter conventional structure or inverted structure, contain several key interfaces, including electrode/electron transport materials (ETM) interface, ETM/perovskite interface, perovskite/hole transport materials (HTM) interface, HTM/electrode interface. The interface is vital to the overall performance of the devices, since the exciton formation, dissociation, and recombination are directly related to the interface. Moreover, the degradation of devices is also highly sensitive to the interface. As a result, the deep understanding of the interfacial charge transfer and corresponding interfacial engineering is extremely important to achieve high-performance and high-stability PSCs. This review mainly focuses on the recent progress of interfacial engineering in PSCs, including conventional structured PSCs, PSCs employing carbon counter electrode, and inverted structured PSCs.

show abstract

Intermixing-seeded growth for high-performance planar heterojunction perovskite solar cells assisted by precursor-capped nanoparticles

Abstract: A novel approach to modulate the nucleation and growth of perovskite crystals by intermixing precursor-capped nanoparticles has been reported.

Cited by 164 publications

References 37 publications

Deciphering the Role of Impurities in Methylammonium Iodide and Their Impact on the Performance of Perovskite Solar Cells

Deciphering the Role of Impurities in Methylammonium Iodide and Their Impact on the Performance of Perovskite Solar Cells

Recent Advances in Halide Perovskite Photodetectors Based on Different Dimensional Materials

Progress of interface engineering in perovskite solar cells

Contact Info

Product

Resources

About