Compositional engineering of perovskite materials for high-performance solar cells

Jeon, Nam Joong; Noh, Jun Hong; Yang, Woon Seok; Kim, Young Chan; Ryu, Seungchan; Seo, Jangwon; Seok, Sang Il

doi:10.1038/nature14133

Cited by 5,589 publications

(4,575 citation statements)

References 27 publications

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“…As an example, the formamidinium (FA) based perovskite FAPbI 3 shows excellent light harvesting properties due to its lower band gap energy (E g ), [11] whereas by using the methylammonium mixed halide perovskite MAPbI x Br 3Àx higher E g and open circuit voltage (V oc ) can be obtained. [12] Improved energy conversion efficiencies are also observed when combining the two perovskite materials in the compositional modification (FAPbI 3 ) 1Àx (MAPbBr 3 ) x that was recently presented by Seok et al, [13] reporting power conversion efficiencies (PCEs) above 20 %. The ambipolar behavior of the perovskite allows its combination either n-i-p or p-i-n configurations with electron transporting (ETMs) and/or with hole-transporting (HTMs) materials.…”

Section: Sinceitsfirstuseaslightabsorberinasensitizedsolarcellbymentioning

confidence: 90%

“…With this approach, the best power conversion efficiency obtained to date, up to 20 %, [13] has been achieved by using the polymer poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA). According to their limited absorption in the visible region, these materials can act as hole-transporters without interfering the spectral response of the photoactive material.…”

Section: Sinceitsfirstuseaslightabsorberinasensitizedsolarcellbymentioning

confidence: 99%

“…At the anode, a compact and mesoporous layer of TiO 2 was deposited on top of a fluorine-doped tin oxide (FTO) coated glass and used as the electron collector, while the cathode consists of a gold electrode thermally evaporated onto the HTM layer. The photoactive material MAPbI 3 is sandwiched in between these layers, as well as the modified perovskite (FAPbI 3 ) 0.85 (MAPbBr 3 ) 0.15 recently introduced by Seok, [13] which was also tested for comparison. Both perovskite layers were fabricated by using a single step spin coating procedure similar to the protocol previously described in the literature.…”

Section: Sinceitsfirstuseaslightabsorberinasensitizedsolarcellbymentioning

confidence: 99%

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Benzotrithiophene‐Based Hole‐Transporting Materials for 18.2 % Perovskite Solar Cells

et al. 2016

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New star-shaped benzotrithiophene (BTT)-based hole-transporting materials (HTM) BTT-1, BTT-2 and BTT-3 have been obtained through a facile synthetic route by crosslinking triarylamine-based donor groups with a benzotrithiophene (BTT) core. The BTT HTMs were tested on solution-processed lead trihalide perovskite-based solar cells. Power conversion efficiencies in the range of 16 % to 18.2 % were achieved under AM 1.5 sun with the three derivatives. These values are comparable to those obtained with today s most commonly used HTM spiro-OMeTAD, which point them out as promising candidates to be used as readily available and cost-effective alternatives in perovskite solar cells (PSCs). SinceitsfirstuseaslightabsorberinasensitizedsolarcellbyMiyasaka and co-workers, [1] organic-inorganic methylammonium (MA) lead halide MAPbX 3 (X = I, Br) perovskites have experienced a scientific research blast for photovoltaic applications. [2][3][4][5][6][7] Organometal trihalide perovskites exhibit exceptional intrinsic properties such as light absorption from visible to near-infrared range, high extinction coefficient, long electron-hole diffusion lengths, a direct band gap as well as high charge carrier mobilities, among others. [8][9][10] Furthermore, the perovskite material is relatively versatile and its electronic properties can be widely tuned by cationic or anionic substitution. As an example, the formamidinium (FA) based perovskite FAPbI 3 shows excellent light harvesting properties due to its lower band gap energy (E g ), [11] whereas by using the methylammonium mixed halide perovskite MAPbI x Br 3Àx higher E g and open circuit voltage (V oc ) can be obtained. [12] Improved energy conversion efficiencies are also observed when combining the two perovskite materials in the compositional modification (FAPbI 3 ) 1Àx (MAPbBr 3 ) x that was recently presented by Seok et al., [13] reporting power conversion efficiencies (PCEs) above 20 %. The ambipolar behavior of the perovskite allows its combination either n-i-p or p-i-n configurations with electron transporting (ETMs) and/or with hole-transporting (HTMs) materials. These interface layers play an important role for transporting and blocking the charges. A wide number of HTMs have been synthesized and investigated in combination with perovskite absorber ranging from classical semiconducting polymers to small molecules.Focusing on the latter, different central cores have been used in the state-of-the-art photovoltaic devices, such as 9,9'-spirobifluorene, [14] spiro-liked derivatives, [15] thiophene derivatives, [16] triphenylamine, [17] bridged-triphenylamines, [18,19] pyrene, [20] 3,4-ethylenedioxythiophene, [21] linear p-conjugated, [22][23][24] triptycene, [25] tetraphenylethene, [26] silolothiophene or triazines, [27] all of them namely decorated with diarylamines, triarylamines and/or carbazole derivatives. With this approach, the best power conversion efficiency obtained to date, up to 20 %, [13] has been achieved by using the polymer poly[bis(4-phenyl)(2,4,6-t...

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Section: Sinceitsfirstuseaslightabsorberinasensitizedsolarcellbymentioning

confidence: 90%

Section: Sinceitsfirstuseaslightabsorberinasensitizedsolarcellbymentioning

confidence: 99%

Section: Sinceitsfirstuseaslightabsorberinasensitizedsolarcellbymentioning

confidence: 99%

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Benzotrithiophene‐Based Hole‐Transporting Materials for 18.2 % Perovskite Solar Cells

et al. 2016

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“…Solvent engineering technique has been proved many times as the most effective method for preparing high‐quality lead perovskite films to achieve high‐performance PSCs 160, 161, 168, 169, 170. The work on solvent engineering of Sn‐based perovskite was first reported by Hao et al,47 where they investigated the solvent effects on the crystallization of the MASnI 3 perovskite films.…”

Section: Lead‐free Halide Hybrid Perovskite and Related Absorbersmentioning

confidence: 99%

Lead‐Free Hybrid Perovskite Absorbers for Viable Application: Can We Eat the Cake and Have It too?

2017

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Many years since the booming of research on perovskite solar cells (PSCs), the hybrid perovskite materials developed for photovoltaic application form three main categories since 2009: (i) high‐performance unstable lead‐containing perovskites, (ii) low‐performance lead‐free perovskites, and (iii) moderate performance and stable lead‐containing perovskites. The search for alternative materials to replace lead leads to the second group of perovskite materials. To date, a number of these compounds have been synthesized and applied in photovoltaic devices. Here, lead‐free hybrid light absorbers used in PV devices are focused and their recent developments in related solar cell applications are reviewed comprehensively. In the first part, group 14 metals (Sn and Ge)‐based perovskites are introduced with more emphasis on the optimization of Sn‐based PSCs. Then concerns on halide hybrids of group 15 metals (Bi and Sb) are raised, which are mainly perovskite derivatives. At the same time, transition metal Cu‐based perovskites are also referred. In the end, an outlook is given on the design strategy of lead‐free halide hybrid absorbers for photovoltaic applications. It is believed that this timely review can represent our unique view of the field and shed some light on the direction of development of such promising materials.

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“…Many research efforts have brought a sharp growth, achieving superior power conversion efficiency (PCE) above 22% 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. The general formula of this material is ABX 3 , where A is a monovalent cation, B is typically Pb, and X is a halide 11.…”

Section: Introductionmentioning

confidence: 99%

Methodologies toward Efficient and Stable Cesium Lead Halide Perovskite‐Based Solar Cells

et al. 2018

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In an attempt to replace thermally vulnerable organic perovskites, considerable research effort has recently been focused on the development of all‐inorganic perovskites in the field of photovoltaics. The preceding studies demonstrated that cesium lead halide perovskites are promising candidates for thermally stable and efficient solar cell materials. Here, the recent progress in cesium lead halide perovskite‐based solar cells is summarized. Whether organic cations are essential for the superiority of halide perovskites is controversial. However, more than 13% efficient solar cells have been successfully fabricated by employing cesium lead halide perovskites in a short amount of time. The state‐of‐the‐art materials engineering techniques will help to achieve a remarkable photovoltaic performance comparable to that of organic perovskites. In addition, improved understanding of the intrinsic photophysical behaviors will provide new insights that will facilitate further improvements in solar cell applications.

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Compositional engineering of perovskite materials for high-performance solar cells

Cited by 5,589 publications

References 27 publications

Benzotrithiophene‐Based Hole‐Transporting Materials for 18.2 % Perovskite Solar Cells

Benzotrithiophene‐Based Hole‐Transporting Materials for 18.2 % Perovskite Solar Cells

Lead‐Free Hybrid Perovskite Absorbers for Viable Application: Can We Eat the Cake and Have It too?

Methodologies toward Efficient and Stable Cesium Lead Halide Perovskite‐Based Solar Cells

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