Perovskite as an effective V oc switcher for high efficiency polymer solar cells

Zhang, Yuliang; Yu, Wei; Qin, Wei; Yang, Zhou; Yang, Dong; Xing, Yedi; Liu, Shengzhong; Li, Can

doi:10.1016/j.nanoen.2015.08.016

Cited by 22 publications

(23 citation statements)

References 58 publications

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“…To explore the carrier transport mechanism in IPOSCs further, a series of IPOSCs, including CH 3 NH 3 PbI 3 /PDPP3T:PC 61 BM‐, CH 3 NH 3 PbI 3 /PBDTTT‐C:PCBM‐, CH 3 NH 3 PbI 3 /PTB7‐Th:PCBM‐, and CH 3 NH 3 PbI 3 /PTB7:PCBM‐based devices, were investigated by Zhang and co‐authors using voltage‐biased EQE measurement and monochromatic light‐irradiated J–V measurement. The study showed that all IPOSCs afford broader photoresponse and higher V oc (Figure ) . CH 3 NH 3 PbI 3 /PDPP3T:PC 61 BM‐based IPOSCs when illuminated under 850 and 520 nm monochromatic light showed that photogenerated carriers either in MAPI or BHJ traveled to their corresponding electrodes separately, which was similar as in ternary OSCs.…”

Section: Strategies Toward Extending Nir Pv Response Of Pscsmentioning

confidence: 69%

Strategies Toward Extending the Near‐Infrared Photovoltaic Response of Perovskite Solar Cells

et al. 2019

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The emerging perovskite materials present great opportunities for cost‐saving and efficient photovoltaic devices. However, perovskite solar cells (PSCs) suffer from the limitation of short optical absorption edge, resulting in most of the near‐infrared (NIR) light being wasted. Recently, strategies toward broadening the NIR spectra response and further improve the power conversion efficiency of PSCs have attracted extensive attention. In this review, the unique features of perovskite materials are first introduced; subsequently, the current developments of organic–inorganic hybrid PSCs and all‐inorganic PSCs are highlighted. Then, a detailed summary of the strategies toward enhancing the NIR light harvesting of PSCs, namely, perovskite/Si and perovskite/Cu(In1–x, Gax)Se2 tandem solar cells (TSCs) and the integrated perovskite/organic solar cells (IPOSCs), is presented. After an in‐depth understanding of the working mechanism of TSCs and IPOSCs, a comprehensive overview about their recent developments, key detrimental factors restricting their further performance enhancement, and feasible countermeasures to conquer these scientific and technological problems are given. In the end, the perspectives on the related materials and devices are addressed.

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Section: Strategies Toward Extending Nir Pv Response Of Pscsmentioning

confidence: 69%

Strategies Toward Extending the Near‐Infrared Photovoltaic Response of Perovskite Solar Cells

et al. 2019

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“…Recently, new organic–inorganic hybrid photovoltaic architectures have been developed by integrating organometallic halide perovskites and organic BHJ composites as photoactive layers . The hybrid systems are called “perovskite/BHJ integrated solar cells (ISCs)”.…”

Section: Device Efficiencymentioning

confidence: 99%

“…Unlike conventional multijunction solar cells, in which the sub‐cells are mechanically separated and electrically connected by an intermediate layer, the distinguishing feature of ISCs is that the perovskite and BHJ layers are monolithically stacked without any intermediate layers. In the ISC operation, the charge carriers that are photogenerated from both perovskite and BHJ films can pass through each film and be collected at electrodes because of the ambipolar transport properties of the photoactive materials . The main purpose of the ISCs is to broaden the light‐harvesting bandwidths of the perovskites (typically, 800 nm) into the NIR region by combining an NIR‐absorbing BHJ, thereby further improving the performance of perovskite solar cells (PSCs).…”

Section: Device Efficiencymentioning

confidence: 99%

“…Although the ISCs exhibited an increased J sc and broad light harvesting compared with PSCs, the device efficiencies were not improved due to reduced V oc and FF values. Zhang et al introduced perovskite as a V oc switcher for OSCs . By depositing various BHJ systems of PDPP3T:PC 60 BM, PTB7:PC 60 BM, and poly[(4,8‐bis‐(2‐ethylhexyloxy)‐benzo[1,2‐b;4,5‐b′]dithiophene)‐2,6‐diyl‐ alt ‐(4‐(2‐ethylhexanoyl)‐thieno[3,4‐b]thiophene)‐2,6‐diyl] (PBDTTT‐C):PC 60 BM onto CH 3 NH 3 PbI 3 , the V oc values of the OSCs were increased to ca.…”

Section: Device Efficiencymentioning

confidence: 99%

“…In particular, they have exhibited low FFs in the range of 60–70%, which are far below the typical values (ca. 80%) of conventional PSCs, and inefficient NIR harvesting, thereby resulting in relatively lower PCEs than those of typical PSCs . Recently, Kim et al successfully resolved the bottlenecks in perovskite/BHJ ISCs by optimizing the BHJ films with a novel ternary blended BHJ system (TBS) comprising an NIR donor polymer, a small‐molecule fullerene, and an n‐type semiconducting polymer, P(NDI2OD‐T2) .…”

Section: Device Efficiencymentioning

confidence: 99%

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Bulk‐Heterojunction Organic Solar Cells: Five Core Technologies for Their Commercialization

et al. 2016

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The past two decades of vigorous interdisciplinary approaches has seen tremendous breakthroughs in both scientific and technological developments of bulk-heterojunction organic solar cells (OSCs) based on nanocomposites of π-conjugated organic semiconductors. Because of their unique functionalities, the OSC field is expected to enable innovative photovoltaic applications that can be difficult to achieve using traditional inorganic solar cells: OSCs are printable, portable, wearable, disposable, biocompatible, and attachable to curved surfaces. The ultimate objective of this field is to develop cost-effective, stable, and high-performance photovoltaic modules fabricated on large-area flexible plastic substrates via high-volume/throughput roll-to-roll printing processing and thus achieve the practical implementation of OSCs. Recently, intensive research efforts into the development of organic materials, processing techniques, interface engineering, and device architectures have led to a remarkable improvement in power conversion efficiencies, exceeding 11%, which has finally brought OSCs close to commercialization. Current research interests are expanding from academic to industrial viewpoints to improve device stability and compatibility with large-scale printing processes, which must be addressed to realize viable applications. Here, both academic and industrial issues are reviewed by highlighting historically monumental research results and recent state-of-the-art progress in OSCs. Moreover, perspectives on five core technologies that affect the realization of the practical use of OSCs are presented, including device efficiency, device stability, flexible and transparent electrodes, module designs, and printing techniques.

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Integrated Perovskite/Bulk‐Heterojunction Organic Solar Cells

Liu

Chen

2019

Advanced Materials

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The recently emerged integrated perovskite/bulk‐heterojunction (BHJ) organic solar cells (IPOSCs) without any recombination layers have generated wide attention. This type of device structure can take the advantages of tandem cells using both perovskite solar and near‐infrared (NIR) BHJ organic solar materials for wide‐range sunlight absorption and the simple fabrication of single junction cells, as the low bandgap BHJ layer can provide additional light harvesting in the NIR region and the high open‐circuit voltage can be maintained at the same time. This progress report highlights the recent developments in such IPOSCs and the possible challenges ahead. In addition, the recent development of perovskite solar cells and NIR organic solar cells is also covered to fully underline the importance and potential of IPOSCs.

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Perovskite as an effective V oc switcher for high efficiency polymer solar cells

Cited by 22 publications

References 58 publications

Strategies Toward Extending the Near‐Infrared Photovoltaic Response of Perovskite Solar Cells

Strategies Toward Extending the Near‐Infrared Photovoltaic Response of Perovskite Solar Cells

Bulk‐Heterojunction Organic Solar Cells: Five Core Technologies for Their Commercialization

Integrated Perovskite/Bulk‐Heterojunction Organic Solar Cells

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