Elimination of the J–V hysteresis of planar perovskite solar cells by interfacial modification with a thermo-cleavable fullerene derivative

Xu, Qiaoqing; Zhen, Lu; Zhu, Lifeng; Kou, Chun; Liu, Yahui; Li, Chun‐Zhu; Meng, Qingbo; Li, Wenhua; Bo, Zhishan

doi:10.1039/c6ta06143e

Cited by 24 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…74 This slow rate can significantly lower the IQE and photocurrent of the cell and enhance the photoelectric hysteresis in the cell, as proved by experimental and theoretical work. 41,73 Thus, interface and material engineering, such as introducing an interface layer, 75 CTL doping, 18 and increasing the interface contact area, are necessary to improve the carrier transfer rate.…”

Section: Charge Generation Relaxation and Transfermentioning

confidence: 99%

From Ultrafast to Ultraslow: Charge-Carrier Dynamics of Perovskite Solar Cells

Shi

et al. 2018

Joule

Self Cite

236

184

View full text Add to dashboard Cite

Despite the rapid development in the past years, performances of the perovskite solar cell are still limited by the photovoltage and fill factor that are mainly determined by the charge-carrier dynamics. In this review, the charge-carrier dynamics of the cell in a wide time span are summarized and discussed to provide a comprehensive understanding of the optoelectronic processes of the perovskite material and devices. Generally, free carriers are generated rapidly and dominate the following transport and recombination processes that mainly occur within a microsecond time scale. The relatively slow defect and ion dynamics and their characteristic time have also been presented. A physics stability regarding this cell is proposed based on understanding the ion dynamics, and the significance of regulating ion and electron dynamics is highlighted. We finally emphasize that elucidation of the band-edge energy structure and charge nature of the perovskite is still an open question.

show abstract

Section: Charge Generation Relaxation and Transfermentioning

confidence: 99%

From Ultrafast to Ultraslow: Charge-Carrier Dynamics of Perovskite Solar Cells

Shi

et al. 2018

Joule

Self Cite

236

184

View full text Add to dashboard Cite

show abstract

“…Besides, metal oxides possess intrinsic lattice defects, which could trap free charges to induce carrier recombination loss of devices . Therefore, additional modification and doping strategies are often used to alleviate these problems, such as the introduction of self‐assembled molecules (SAMs) . Additionally, polyelectrolytes, such as poly[(9,9‐bis(3′‐( N , N ‐dimethylamino)propyl)‐2,7‐fluorene)‐alt‐2,7‐(9,9‐dioctylfluorene)] bromide (PFN‐Br), polyethylenimine (PEI), and ethoxylated polyethylenimine (PEIE) have been used as cathode interfacial materials to induce strong interfacial dipoles for adjusting work functions (WFs) of electrodes.…”

Section: Introductionmentioning

confidence: 99%

Solution‐Processable Conductive Organics via Anion‐Induced n‐Doping and Their Applications in Organic and Perovskite Solar Cells

Yan

2019

Macro Chemistry & Physics

View full text Add to dashboard Cite

The essential challenge for accessing high‐performance organic optoelectronics strongly relies on how to enable organic materials with high charge transport capabilities. This short review gives an elucidation of the mild n‐doping that occurs between Lewis base anions and n‐semiconductors, as well as their extension to develop solution‐processable conductive interlayers for organic and perovskite solar cells.

show abstract

“…It is important to emphasize that the best PCE of 20.7% obtained from the 5a -based perovskite solar cells is highly reproducible (Figure S17) and stands by far the highest among the reported fullerene over-coating ETL-based MAPbI 3 -used perovskite solar cells (Figure S18 and Table S10). − ,,,− …”

Section: Results and Disccusionmentioning

confidence: 99%

Highly Selective and Scalable Fullerene-Cation-Mediated Synthesis Accessing Cyclo[60]fullerenes with Five-Membered Carbon Ring and Their Application to Perovskite Solar Cells

et al. 2019

View full text Add to dashboard Cite

Cyclo[60]fullerenes are widely used in many applications including photovoltaic devices owing to their high electron affinity and mobility for an organic molecule. However, their synthesis has been limited to certain derivatives with low yields. In this work, a fullerene-cation-mediated synthesis, accessing a new class of five-membered carbon ring cyclo [60]fullerenes with high yields of up to 93% is showcased. This method utilizes aryl[60]fullerene cations, ArC 60 + , as intermediates, which are generated in situ by heating the aryl[60]fullerenyl dimers in the presence of CuBr 2 . In addition, five-membered carbon ring cyclo[60]fullerenes display excellent device applicability when they are used in perovskite solar cells as over-coating layers of electrontransporting layers. A power conversion efficiency of 20.7% is achieved owing to the favorable energy alignment, optimized substrate design, and electrochemical stability of the five-membered carbon ring fullerenes.

show abstract

Elimination of the J–V hysteresis of planar perovskite solar cells by interfacial modification with a thermo-cleavable fullerene derivative

Abstract: Efficient hysteresis elimination and significant performance improvement are achieved by interfacial modification with a thermo-cleavable fullerene derivative.

Cited by 24 publications

References 26 publications

From Ultrafast to Ultraslow: Charge-Carrier Dynamics of Perovskite Solar Cells

From Ultrafast to Ultraslow: Charge-Carrier Dynamics of Perovskite Solar Cells

Solution‐Processable Conductive Organics via Anion‐Induced n‐Doping and Their Applications in Organic and Perovskite Solar Cells

Highly Selective and Scalable Fullerene-Cation-Mediated Synthesis Accessing Cyclo[60]fullerenes with Five-Membered Carbon Ring and Their Application to Perovskite Solar Cells

Contact Info

Product

Resources

About