Perovskite Solar Cells Employing Copper Phthalocyanine Hole-Transport Material with an Efficiency over 20% and Excellent Thermal Stability

Duong, The; Peng, Jun; Walter, Daniel; Xiang, Jin; Shen, Heping; Chugh, Dipankar; Lockrey, Mark; Zhong, Dingyong; Li, Juntao; Weber, Klaus; White, Thomas P.; Catchpole, Kylie

doi:10.1021/acsenergylett.8b01483

Cited by 92 publications

(83 citation statements)

References 41 publications

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“…In addition to this, the photoexcited electrons could delocalize over the whole π‐system, which contributes to a better charge transportation. Although the highest efficiency of more than 20% is achieved using commercially available copper phthalocyanine as an HTM with good thermal and light stability, the inexpensive, and abundant properties of natural chlorophyll derivatives make them unique and competitive to other traditional HTMs.…”

Section: Pscs Utilizing Semisynthetic Chlorophyll Derivativesmentioning

confidence: 99%

Semisynthetic Chlorophyll Derivatives Toward Solar Energy Applications

Duan

Zhou

et al. 2020

Solar RRL

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Plenty of thin‐film solar cell technologies using organic materials have been developed to alleviate energy shortages. As developing devices for solar energy applications, artificial photosynthesis is a trend inspired from natural photosynthesis. Although the sophisticated system that exists in nature is fascinating, the development of photovoltaic devices focusing on the usage of natural chlorophylls has been quite limited, compared with the application of other counterparts such as artificial porphyrins or phthalocyanines. Herein, the development of semisynthetic chlorophyll derivatives as functional materials for solar cells are focused on. (Bacterio)chlorins possessing a carboxylic acid moiety as a binding site to semiconductors are synthesized to improve the efficiencies of dye‐sensitized solar cells, which are now leading to another application: photocatalysts for hydrogen evolution. In contrast, derivatives without a carboxy group can be applied to organic solar cells. As for the application for perovskite solar cells, self‐assembling aggregates of a kind of derivatives are proven to be suitable as hole‐transporting materials. In addition, a new type of solid‐state biosolar cells is proposed, in which chlorophyll derivatives act solely as the photoactive materials. This Report can enlarge the scope of advanced functional materials in the field of solar energy applications.

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Section: Pscs Utilizing Semisynthetic Chlorophyll Derivativesmentioning

confidence: 99%

Semisynthetic Chlorophyll Derivatives Toward Solar Energy Applications

Duan

Zhou

et al. 2020

Solar RRL

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“…[ 18,23,24 ] The chemical structure of spiro‐OMeTAD is shown in Figure a. Although other small molecules, [ 25–27 ] polymers, [ 28–30 ] and inorganics [ 31–33 ] have been developed for the HTLs of PSCs, spiro‐OMeTAD is still excellent among the reported HTL materials in terms of PCEs. PSCs with spiro‐OMeTAD are comparably stable at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Degradation of Spiro‐OMeTAD‐Based Perovskite Solar Cells at High Temperature

et al. 2020

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Organic-inorganic halide perovskites are promising as the light absorber of solar cells because of their efficient solar power conversion. An issue frequently occurring in perovskite solar cells (PSCs) with a hole transport layer of N,N-di (4-methoxyphenyl)amino]-9,9 0-spirobifluorene (spiro-OMeTAD) is a quick performance degradation at high temperature. Herein, it is discovered that postdoping of the spiro-OMeTAD layer by iodine released from the perovskite layer is one possible mechanism for the high-temperature PSC degradation. Iodine doping leads to the highest occupied molecular orbital level of the spiro-OMeTAD layer becoming deeper and, therefore, induces the formation of an energy barrier for hole extraction from the perovskite layer. It is demonstrated that it is possible to suppress the high-temperature degradation by using an iodine-blocking layer or an iodine-free perovskite in PSCs. These findings will guide the way for the realization of thermally stable perovskite optoelectronic devices in the future.

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Section: Htms In Conventional Structures (N–i–p)mentioning

confidence: 99%

“…A recent report on CuPc demonstrated a high efficiency over 20% (20.09%) and a high stability in the Per‐SC. The CuPc device exhibited good thermal stability at 85 °C for 2000 h and light stability for 100 h (Figure c) …”

Section: Htms In Conventional Structures (N–i–p)mentioning

confidence: 99%

Hole Transport Materials in Conventional Structural (n–i–p) Perovskite Solar Cells: From Past to the Future

Kim

Choi

Kim

et al. 2020

Advanced Energy Materials

202

142

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With the application of organic–inorganic hybrid perovskites to liquid‐type solar cells, the unprecedented development of perovskite solar cells (Per‐SCs) has been boosted by the introduction of solid‐state hole transport materials (HTMs). The removal of liquid electrolyte has lead to improved efficiency and stability. Supported by high‐quality perovskite films, the certified efficiency of Per‐SCs has reached 25.2%. For Per‐SCs assembled in a conventional structure (n–i–p), the hole transport layer (HTL) plays an extra role in preventing the perovskite layer from external stimuli. In summary, the successful design and fabrication of the HTL must meet various requirements in terms of solubility, hole transport, recombination prevention, stability, and reproducibility, to name but a few. Many research strategies are focused on the development of high‐performance HTMs to meet such requirements. Such strategies for the development of HTMs employed in conventional n–i–p solar cells are reviewed herein. A vision of the future HTMs is proposed in this review based on the already proposed solutions and current trends.

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Perovskite Solar Cells Employing Copper Phthalocyanine Hole-Transport Material with an Efficiency over 20% and Excellent Thermal Stability

Cited by 92 publications

References 41 publications

Semisynthetic Chlorophyll Derivatives Toward Solar Energy Applications

Semisynthetic Chlorophyll Derivatives Toward Solar Energy Applications

Understanding the Degradation of Spiro‐OMeTAD‐Based Perovskite Solar Cells at High Temperature

Hole Transport Materials in Conventional Structural (n–i–p) Perovskite Solar Cells: From Past to the Future

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