Enhanced electrical properties of Li-salts doped mesoporous TiO2 in perovskite solar cells

Kim, Minjin; Choi, In Woo; Choi, Sung‐Ja; Song, Jang Ho; Mo, Sung-In; An, Jeong-Ho; Jo, Yimhyun; Ahn, SeJin; Ahn, Seoung Kyu; Kim, Gi-Hwan; Kim, Dong Suk

doi:10.1016/j.joule.2021.02.007

Cited by 156 publications

(121 citation statements)

References 65 publications

Supporting

Mentioning

121

Contrasting

Order By: Relevance

“…The major obstacles to narrow the gap in e ciency between the small devices and large-area modules come from the signi cant resistive loss 7,8 and the complexity of the processes for achieving high-quality large-area perovskite lms. 4,5,6,9 Although high-performance devices based on a planar structure were achieved 1,2,10 , utilization of mesoporous TiO 2 (m-TiO 2 ) skeletons has been demonstrated as an e cient structure in most high-e ciency devices 7,11,12 , because of a large TiO 2 /perovskite contact area for interfacial charge transfer and suppressed charge recombination over planar perovskite solar cells 13,14 . A detailed photoelectrical model 15 was proposed to rationalize and quantify the ll factor (FF) losses of devices (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…7 Another strategy is to dope the ETL with various metal ions, e.g. lithium (Li) 11,18 , Yttrium (Y) 19 , Indium (In) 20 , which can not only increases the conductivity of the ETL, but allows to tune the band offset in a device. 21 Fast charge transfer at the TiO 2 /perovskite interface is also critical to minimize current leakage through shunts.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Single-crystalline TiO2 Nanoparticles for Narrowing the Scalability Gap towards Stable and Efficient Perovskite Modules

Ding

Kanda

et al. 2021

Preprint

View full text Add to dashboard Cite

Remarkable progress in power conversion efficiency of perovskite solar cells (PSCs) has been achieved over the last decade, reaching 25.5%. However, transferring these accomplishments from individual small-size devices into large-area modules while preserving their commercial competitiveness compared to other thin-film solar cells remains a challenge. A major obstacle is to reduce the resistive losses and the number of intrinsic defects of electron transport layers (mesoporous TiO2, ETL) and to fabricate high-quality large-area perovskite films. Here, we report a facile solvothermal method to synthesize single-crystalline TiO2 rhombus-like nanoparticles with exposed {001} facets. Owing to their low lattice mismatch with the perovskite absorber, high electron mobility and lower density of defects, single-crystalline TiO2 nanoparticle-based small-size devices (0.09 cm2) achieve an efficiency of 24.05% and a fill factor of 84.7%. Importantly, these devices maintain about 90% of their initial performance after continuous operation for 1400 h. Combined with vacuum quenching-assisted techniques, we have fabricated large-area modules and obtained a certified efficiency of 22.72% with an active area of nearly 24 cm2. This represents the highest efficiency modules with the lowest efficiency loss between small-size devices and modules, enabling to reproducibly fabricate stable and efficient PSC modules.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Single-crystalline TiO2 Nanoparticles for Narrowing the Scalability Gap towards Stable and Efficient Perovskite Modules

Ding

Kanda

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…So far, TiO 2 is still the first choice as the ETL. However, scientists have gradually realized some shortcomings of TiO 2 (Shariatinia, 2020;Kim et al, 2021). For example, the low electron mobility of TiO 2 and its surface adsorption of oxygen and UV are likely to affect the long-term stability of perovskite cells and limit the further improvement of device efficiency.…”

Section: Discussionmentioning

confidence: 99%

MOFs based on the application and challenges of perovskite solar cells

Shen

Zhang

et al. 2021

iScience

View full text Add to dashboard Cite

In recent years, perovskite solar cells (PSCs) have attracted much attention because of their high energy conversion efficiency, low cost, and simple preparation process. Up to now, the photoelectric conversion efficiency of solar cells has been increased from 3.8% to 25.5%. Metal-organic skeleton-derived metal oxides and their composites (MOFs) are widely considered for application in PSCs due to their low and flat charge/discharge potential plateau, high capacity, and stable cycling performance. By combining MOFs and PSCs, based on the composition materials of perovskite film, electron transport layer, hole transport layer, and interfacial interlayer of PSCs, this article discusses the photovoltaic performance or structure optimization effect of MOFs in each function layer, which is of great significance to improve the photovoltaic performance of the cell. The problems faced by MOFs on perovskite solar cells are summarized, the next research directions are discussed, and the development of this crossover area of MOFs-PSC is foreseen to accelerate the comprehensive research and popularization of MOFs on PSCs.

show abstract

“…has used Li‐salt in TiO 2 to augment the electrical properties of ETL, and subsequently, the solar cell performance. [ 17 ] The addition of Li 2 CO 3 can lead to a pure form of Li‐doped m‐TiO 2 without any residual anions, and these Li‐doped bond structures could generate deep level conduction bands. This reduces accumulation at the interface, which leads to the fast and easy extraction of photogenerated charge carriers.…”

Section: Perovskite Solar Cells: Device Architectures Materials and Electrodesmentioning

confidence: 99%

“…In the last five years, scientific efforts and engineering improvements in perovskite formulation and the device fabrication have led to a significant enhancement in the PCE beyond 25% in the laboratory scale. [ 4,15–20 ] The journey of perovskite materials toward PVs application began with methylammonium (MA) lead iodide or bromide perovskite (CH 3 NH 3 PbI 3 /MAPbI 3 ). In the early days, most research focused on the substitution of halide ions with chloride and bromide in different stoichiometric ratios to achieve better optoelectronic properties with PCE augmentation.…”

Section: Introductionmentioning

confidence: 99%

Emerging Perovskite Solar Cell Technology: Remedial Actions for the Foremost Challenges

Sahare

Pham

Angmo

et al. 2021

Advanced Energy Materials

View full text Add to dashboard Cite

Perovskite solar cells (PSCs) exhibit the steepest growth in power conversion efficiency among the existing photovoltaic technologies. However, a wide range of factors restrict the commercial viability of PSCs as a renewable energy source. This article reviews the latest progress in PSC devices including innovative light‐harvesting perovskite materials and advanced interfacial layers, and the foremost challenges. The most promising remedial solutions to challenges are also discussed. For the realization of a high performing and eco‐friendly stabilized perovskite photovoltaic device, a combinational method involving multiple restorative solutions is required. A specific emphasis is given to unveiling interesting perovskite properties, and device fabrication approaches to the solutions. These remedies and strategies may help researchers to select appropriate methods and design their experiments to obtain a high photo‐conversion efficiency in photovoltaic devices with enhanced stability as compared to conventional photovoltaic devices.

show abstract

Enhanced electrical properties of Li-salts doped mesoporous TiO2 in perovskite solar cells

Cited by 156 publications

References 65 publications

Single-crystalline TiO2 Nanoparticles for Narrowing the Scalability Gap towards Stable and Efficient Perovskite Modules

Single-crystalline TiO2 Nanoparticles for Narrowing the Scalability Gap towards Stable and Efficient Perovskite Modules

MOFs based on the application and challenges of perovskite solar cells

Emerging Perovskite Solar Cell Technology: Remedial Actions for the Foremost Challenges

Contact Info

Product

Resources

About