A two-terminal perovskite/perovskite tandem solar cell

Jiang, Fangyuan; Liu, Tiefeng; Luo, Bangwu; Tong, Jinhui; Qin, Fei; Xiong, Sixing; Li, Zaifang; Zhou, Yinhua

doi:10.1039/c5ta08744a

Cited by 147 publications

(121 citation statements)

References 32 publications

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“…The control device with pristine PC 61 BM ETL displays an "S-shape" in the J-V characteristic in both reverse and forward scanning directions (Figure 4b), which is the signature of poor charge collection at the interface between the ETL and the electrode. [26,27] In this device, there is no S-shape observed in the doped device, which is in agreement with the efficiency by J-V measurement (Figure 4c). For comparison, we also fabricated devices with a structure of ITO/NiO x /CH 3 NH 3 PbI 3 / PC 61 BM/PEI/Ag where PEI is polyethylenimine that is used to produce low work function interface.…”

Section: Application In Perovskite Solar Cellssupporting

confidence: 88%

An Amidine‐Type n‐Dopant for Solution‐Processed Field‐Effect Transistors and Perovskite Solar Cells

Liu

Duan

et al. 2017

Adv Funct Materials

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This study reports an effective amidine-type n-dopant of 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) that can universally dope electron acceptors, including PC 61 BM, N2200, and ITIC, by mixing the dopant with the acceptors in organic solvents or exposing the acceptor films in the dopant vapor. The doping mechanism is due to its strong electron-donating property that is also confirmed via the chemical reduction of PEDOT:PSS (yielding color change). The DBU doping considerably increases the electrical conductivity and shifts the Fermi levels up of the PC 61 BM films. When the DBU-doped PC 61 BM is used as an electron-transporting layer in perovskite solar cells, the n-doping removes the "S-shape" of J-V characteristics, which leads to the fill factor enhancement from 0.54 to 0.76. Furthermore, the DBU doping can effectively lower the threshold voltage and enhance the electron mobility of PC 61 BMbased n-channel field-effect transistors. These results show that the DBU can be a promising n-dopant for solution-processed electronics.

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Section: Application In Perovskite Solar Cellssupporting

confidence: 88%

An Amidine‐Type n‐Dopant for Solution‐Processed Field‐Effect Transistors and Perovskite Solar Cells

Liu

Duan

et al. 2017

Adv Funct Materials

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“…The author claims that in this tunnel junction, the PFN dipolar thin layer can facilitate the electrons extraction and the high-work function MoO 3 layer can maintain good Ohmic Contact with the up-lying organic layers, where the doped MoO 3 layer can ensure effi cient combination and robust protection against the solution process. Lately, Jiang et al [ 145 ] have reported a 7% effi ciency tandem solar cell with a V oc of 1.89 eV. In that structure, the PEDOT:PSS and PFN with a surface dipole are used as carriers transporting layers.…”

Section: Tunnel Junctionmentioning

confidence: 99%

The Progress of Interface Design in Perovskite‐Based Solar Cells

Fan

Huang

Wang

et al. 2016

Advanced Energy Materials

142

117

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Figure 20. a) Modeled J − V characteristics of a perovskite device comprising ions but no traps. b) Modeled I -V characteristics of perovskite devices comprising ions and no traps for varying ion densities. c) Modeled J − V characteristics of perovskite device comprising ions and traps with varying ion mobility as indicated in the legend at a sweep rate of 100 kV s −1 . d) Modeled J -V characteristics of a perovskite device comprising ions and bulk traps. [ 211 ] 2015, American Chemical Society. e) Flow directions of the charged ion species in a Pb|MAPbI 3 |AgI |Ag cell under electrical bias. f) Images for surfaces A and B and g) a scanning electron microscope (SEM) image of surface B on the Pb pellet. h) The same cell confi guration to Figure 23 e. i) Images of each pellets after aging at 50 °C for a week in Ar atmosphere (no current stressing). Reproduced with permission. [ 212 ]

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“…[27] Also in this case the two subcells used an identical perovskite absorber, MAPbI 3 , hence limiting the overall PCE. In another work, a monolithic perovskite-perovskite tandem device was fully solution processed using a multilayer organic CRL, which is challenging due to the requirement of solvent orthogonality during processing of each of the layers.…”

Section: Doi: 101002/aenm201602121mentioning

confidence: 99%

Efficient Monolithic Perovskite/Perovskite Tandem Solar Cells

Forgács

Gil‐Escrig

Pérez‐del‐Rey

et al. 2016

Advanced Energy Materials

268

249

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Efficient monolithic perovskite/perovskite tandem solar cells are fabricated using two perovskite absorbers with complementary bandgaps. By employing doped organic semiconductors, an efficient and selective extraction of the charge carriers is ensured. This study demonstrates perovskite/perovskite tandem cells delivering a maximum efficiency of 18%, highlighting the potential of vacuum‐deposited multilayer structures in overcoming the efficiency of single‐junction perovskite devices.

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A two-terminal perovskite/perovskite tandem solar cell

Cited by 147 publications

References 32 publications

An Amidine‐Type n‐Dopant for Solution‐Processed Field‐Effect Transistors and Perovskite Solar Cells

An Amidine‐Type n‐Dopant for Solution‐Processed Field‐Effect Transistors and Perovskite Solar Cells

The Progress of Interface Design in Perovskite‐Based Solar Cells

Efficient Monolithic Perovskite/Perovskite Tandem Solar Cells

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