A perylene diimide-based electron transport layer enabling efficient inverted perovskite solar cells

Jiang, Kui; Wu, Fei; Yu, Hui; Yao, Yanqing; Zhang, Guangye; Zhu, Linna; Yan, He

doi:10.1039/c8ta06081a

Cited by 81 publications

(50 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…TPE‐PDI 4 ‐based devices showed a higher PCE than that of PCBM‐based devices. In addition, TPE‐PDI 4 gave a high performance as interfacial layer for C60 as ETL in the structure ITO/P3CT‐Na/perovskite/TPE‐PDI4/C60/BCP/Ag, suggesting that TPE‐PDI 4 facilitated the electron transporting from perovskite to C60, which reflected on all photovoltaic parameters of fabricated solar cell and PCE enhanced from 16.56% to 18.78% . All chemical structures of PDI‐based ETLs, which presented in this section, are shown in Figure .…”

Section: Nonfullerene Acceptors As Etls In Inverted Pscsmentioning

confidence: 62%

See 1 more Smart Citation

Recent Progress in Organic Electron Transport Materials in Inverted Perovskite Solar Cells

Said

Xie

Zhang

2019

Small

233

172

View full text Add to dashboard Cite

Organic n‐type materials (e.g., fullerene derivatives, naphthalene diimides (NDIs), perylene diimides (PDIs), azaacene‐based molecules, and n‐type conjugated polymers) are demonstrated as promising electron transport layers (ETLs) in inverted perovskite solar cells (p–i–n PSCs), because these materials have several advantages such as easy synthesis and purification, tunable frontier molecular orbitals, decent electron mobility, low cost, good solubility in different organic solvents, and reasonable chemical/thermal stability. Considering these positive factors, approaches toward achieving effective p–i–n PSCs with these organic materials as ETLs are highlighted in this Review. Moreover, organic structures, electron transport properties, working function of electrodes caused by ETLs, and key relevant parameters (PCE and stability) of p–i–n PSCs are presented. Hopefully, this Review will provide fundamental guidance for future development of new organic n‐type materials as ETLs for more efficient p–i–n PSCs.

show abstract

Section: Nonfullerene Acceptors As Etls In Inverted Pscsmentioning

confidence: 62%

“…b) Steady state and TRPL of perovskite/PCBM and perovskite TPE‐PDI 4 bilayers; c) AFM images of perovskite layer, PCBM on perovskite layer, and TPE‐PDI 4 on perovskite layer. Reproduced with permission . Copyright 2018, Royal Society of Chemistry.…”

Section: Nonfullerene Acceptors As Etls In Inverted Pscsmentioning

confidence: 99%

Recent Progress in Organic Electron Transport Materials in Inverted Perovskite Solar Cells

Said

Xie

Zhang

2019

Small

233

172

View full text Add to dashboard Cite

show abstract

“…[ 42 ] In contrast, dopant‐free organic small‐molecular HTMs could achieve highly efficient PVSCs and have much better processability, reproducibility, higher transmittance in the visible region, tunable energy levels, and improved long‐term stability. [ 43–46 ]…”

Section: Figurementioning

confidence: 99%

Dopant‐Free Organic Hole‐Transporting Material for Efficient and Stable Inverted All‐Inorganic and Hybrid Perovskite Solar Cells

et al. 2020

Self Cite

View full text Add to dashboard Cite

stability of perovskite materials under photo-, thermal, or moisture stresses, and the volatile nature of the organic cations in the prototype (organic-inorganic hybrid) perovskite composition, may hinder their commercialization. [3][4][5] To address the stability issues, all-inorganic perovskite solar cells (PVSCs) based on cesium (Cs) lead halide has been developed and has drawn considerable research attention, wherein the organic cations in the perovskite structure are completely replaced by the inorganic Cs ions, whose atomic size is suitable to form the perovskite crystal structure. [6][7][8][9] Among all the Cs-based PVSCs, the cesium lead iodine (CsPbI 3 ) has the most favorable bandgap (1.73 eV), but the black phase of CsPbI 3 is not stable at room temperature. [10,11] Therefore, various methods have been investigated including partially substituting I or Pb ions in the CsPbI 3 perovskite with Br or Sn ions, which regulates the tolerance factor of the lattice and thus improves the phase stability of blackphase CsPbI 3 . [12][13][14][15] Among them, CsPbI 2 Br shows good phase stability and a reasonable bandgap of 1.92 eV, which is suitable for perovskite/silicon tandem cells applications. [10,16,17] At present, PCE of over 19% has been reported for allinorganic PVSCs that employed the doped Spiro-OMeTAD as Designing new hole-transporting materials (HTMs) with desired chemical, electrical, and electronic properties is critical to realize efficient and stable inverted perovskite solar cells (PVSCs) with a p-i-n structure. Herein, the synthesis of a novel 3D small molecule named TPE-S and its application as an HTM in PVSCs are shown. The all-inorganic inverted PVSCs made using TPE-S, processed without any dopant or post-treatment, are highly efficient and stable. Compared to control devices based on the commonly used HTM, PEDOT:PSS, devices based on TPE-S exhibit improved optoelectronic properties, more favorable interfacial energetics, and reduced recombination due to an improved trap passivation effect. As a result, the all-inorganic CsPbI 2 Br PVSCs based on TPE-S demonstrate a remarkable efficiency of 15.4% along with excellent stability, which is the one of the highest reported values for inverted all-inorganic PVSCs. Meanwhile, the TPE-S layer can also be generally used to improve the performance of organic/inorganic hybrid inverted PVSCs, which show an outstanding power conversation efficiency of 21.0%, approaching the highest reported efficiency for inverted PVSCs. This work highlights the great potential of TPE-S as a simple and general dopant-free HTM for different types of high-performance PVSCs.

show abstract

“…此外, 通过简单的溶剂热反应合成了分散硫化镉(CdS)纳米颗粒, 将其用作反式平面钙钛矿太阳能电池中的电子传输层, 可获得光电转化效率为 13.36%反式器件 [96] . 朱琳娜等 [84] 合成了具有优异电子迁移率和溶液可加工性的 TPE-PDI 4 (图 7a)作为电子传输材料用在反式钙钛矿太阳能电池中, 相同条件下, TPE-PDI 4 的电子传输性能高于 PCBM(图 7c), 同时, TPE-PDI 4 比 PCBM 具有更好的耐水性, 能更有效地保护钙钛矿层, 反式器件光电转化效率达到 18.8%. Chen 等 [85] 合成并表征了三种亚异丁烯二亚胺 (X-PDI, 其中 X＝H、F 或 Br), 用于反式钙钛矿太阳能电池中.…”

Section: 非富勒烯电子受体unclassified

Research Progress of Inverted Perovskite Solar Cells

Yang¹,

Zhu²,

Lin³

et al. 2019

Acta Chim. Sinica

View full text Add to dashboard Cite

Since the introduction of perovskite solar cells in 2009, perovskite solar cells have developed rapidly due to their low-cost and high theoretical photoelectric conversion efficiency. Among them, the inverted structure of perovskite solar cells has received more and more attention due to its good stability and low hysteresis effect. Since its inception in 2013, its photoelectric conversion efficiency has rapidly increased from the initial 3.9% to 21.5%. However, compared with the traditional upright structure perovskite solar cells, there is still a gap in the photoelectric conversion efficiency of inverted perovskite solar cells. Due to the nature of the organic materials used, perovskites are more severely affected by moisture in the air environment. They are heavily dependent on nitrogen protection during device manufacturing. In the future, if perovskite solar cells are put into production, the fully enclosed waterless environment will obviously increase the production costs. At the same time, the development of large-area preparation technology is still a difficult problem to be solved. The development of inverted perovskite solar cells, the selection of carrier transport materials, interface optimization, and the development of flexible devices are systematically reviewed in this paper. For example, PEDOT:PSS was doped by GeO 2 and DMSO, and PEDOT:PSS was modified by MoO 3 and GO to improve its work function, acidity and hygroscopicity. A NiO x dense layer is usually doped with Mg 2＋ , Li ＋ and Cs 4＋ to increase its conductivity, which can be prepared by different methods such as magnetron sputtering and sol-gel method. The PCBM interface is modified by C 60 , BCP, LiF etc., to enhance its ohmic contact with the metal counter electrode. And the PCBM is doped by graphene, CoSe, SnO 2 etc., to reduce the charge recombination caused by the interfacial resistance and the defects of the perovskite film. This paper would provide a way to obtain a high efficiency inverted perovskite solar cells by structure and material optimization. And it also give insights into the general rules for preparing large area and flexible devices.

show abstract

A perylene diimide-based electron transport layer enabling efficient inverted perovskite solar cells

Abstract: High efficiencies of 16.29% and 18.78% are obtained in inverted PSCs using TPE-PDI4 as an electron transporting material and interfacial material, respectively.

Cited by 81 publications

References 41 publications

Recent Progress in Organic Electron Transport Materials in Inverted Perovskite Solar Cells

Recent Progress in Organic Electron Transport Materials in Inverted Perovskite Solar Cells

Dopant‐Free Organic Hole‐Transporting Material for Efficient and Stable Inverted All‐Inorganic and Hybrid Perovskite Solar Cells

Research Progress of Inverted Perovskite Solar Cells

Contact Info

Product

Resources

About