Highly efficient poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/Si hybrid solar cells with imprinted nanopyramid structures

Chen, Jheng Yuan; Yu, Ming; Chang, Shun Fa; Sun, Kien-Wen

doi:10.1063/1.4822116

Cited by 33 publications

(28 citation statements)

References 19 publications

(43 reference statements)

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“…In order to improve light harvesting efficiency, nanostructured Si, such as nanowire, [35] nanocone, [36] nanopyramid, [37] and composite nanostructures [18,38] are usually applied. Transfer efficiency depends on the donor-toacceptor separation distance with an inverse exponential law, which indicates interface distance dominating the charge transfer efficiency.…”

Section: Doping-free Asymmetrical Silicon Heterocontact Achieved By Imentioning

confidence: 99%

Doping‐Free Asymmetrical Silicon Heterocontact Achieved by Integrating Conjugated Molecules for High Efficient Solar Cell

Liu

et al. 2017

Advanced Energy Materials

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Organic conjugated molecule/silicon (Si) heterojunction has been widely investigated to build up an asymmetrical heterocontact for efficient photovoltaics. However, it is still unclear how the organic molecular structures can affect their electronic coupling interaction with Si. Here, two widely explored electron acceptors of poly{[N,N′‐bis(2‐octyldodecyl)‐naphthalene‐1,4,5,8‐bis(dicarboximide)‐2,6‐diyl]‐alt‐5,5′‐(2,2′‐bithiophene)} (N2200) and [6,6]‐phenyl‐C61‐butyric acid methyl ester (PCBM) are used to build up asymmetrical Si heterocontact to investigate their electronic coupling interaction. It is found that PCBM displays different electronic coupling with Si from N2200, which is ascribed to their various physical distance with Si based on a systematic and detailed density functional theory calculation. Organic layer incorporation not only suppresses the surface charge recombination velocity but also leads to an Ohmic contact between Si and Al. Therefore, a doping‐free organic/Si heterojunction photovoltaic with a power conversion efficiency of 14.9% is achieved with PCBM layer. This work discloses a key factor affecting organic/Si electronic coupling interaction, which helps build up high quality Si heterocontact for solar cells and other optoelectronic devices. Furthermore, the simplified heterocontact achieved by a low temperature, solution processed, and lithography‐free steps has a dramatic improvement on conventional diffusion doped‐silicon one at high temperature.

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Section: Doping-free Asymmetrical Silicon Heterocontact Achieved By Imentioning

confidence: 99%

Doping‐Free Asymmetrical Silicon Heterocontact Achieved by Integrating Conjugated Molecules for High Efficient Solar Cell

Liu

et al. 2017

Advanced Energy Materials

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“…采用了微米金字塔结构和 PEDOT:PSS 的杂化太阳能电池取得了 30.50 mA/cm 2 的短路电流和 9.84%的效率 [63] , 有课题组用更规整的纳米压印方法制备的电池在 4 cm 2 的面积上获得了 32.5 mA/cm 2 的电流和 10.86%的效率 [64] . 2013…”

Section: 基于硅纳米线的杂化太阳能电池unclassified

Silicon-based Organic/inorganic Hybrid Solar Cells

Liu¹,

Sun²

2015

Acta Chim. Sinica

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Organic-inorganic hybrid solar cells display potential to be high efficiency and low cost photovoltaics due to combined advantages of high stability, high mobility and well developed fabrication process from inorganic materials and the properties to adjust organic molecule structure, absorption spectrum and bandgap from solution processable organics. Heterojunction photovoltaics formed by silicon and organics at low temperature has drawn great interests over past five years and the reported highest power conversion efficiency (PCE) has achieved up to 13.8%. The emerging of nanotechnology allows for silicon micro/nano structures including silicon nanowires, pyramids and nanocones with excellent light absorption properties which can greatly reduce the consumption of silicon materials as well as the purity dependence. The micro/nano structures also exhibit the advantages to offer larger junction area and more effective separation pathways for charge carriers. It is noticeable that silicon nanowire-based flexible hybrid solar cells with tens of micrometers silicon substrate thickness have achieved the PCE of above 12% adopting the most popular commercialized conjugated polymer poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS). With the rapid developments of new organic materials and interface engineering methods, different kinds of organic-silicon hybrid solar cells has been reported and shown superior photovoltaic characteristics. The adopted organics include PEDOT:PSS, poly(3-hexylthiophene) (P3HT), 2,2',7,7'-Tetrakis-(N,N-di-4-methoxyphenylamino)-9,9'-spirobifluorene (Spiro-OMeTAD), poly(3-octylthiophene) (P3OT), fullerene derivative and so on. This paper reviews the device structures of silicon-based hybrid solar cells, working mechanism and related organic molecular. The hybrid heterojunction with different materials and fabrication processes has been discussed. The last section summarizes the method used to improve the performance of the hybrid solar cells and depicts the challenges and prospects of the silicon-based hybrid solar cells in the near future.

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“…The optimized structure yielded a photocurrent of 34.6 mA/cm 2 at an equivalent thickness of 2 μm, close to the Yablonovitch limit 112. Nanohole arrays and hybrid nanocone arrays also exhibited good AR properties and high photo conversion efficiency 113,114. Recently, the Schottky junction with modified graphene films and antireflective silicon pillar arrays were fabricated by…”

mentioning

confidence: 93%

Recent advances in antireflective surfaces based on nanostructure arrays

2015

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Reducing the reflection and improving the transmission or absorption of light from wide angles of incidence in a broad wavelength range are crucial for enhancing the performance of the optical, optoelectronic, and electro-optical devices. Inspired by the structures of the insect compound eyes, nanostructure arrays (NSAs) have been developed as effective antireflective surfaces, which exhibit promising broadband and quasi-omnidirectional antireflective properties together with multifunctions. This review summarizes the recent advances in the fabrication and performance of antireflective surfaces based on NSAs of a wide variety of materials including silicon and non-silicon materials. The applications of the NSA-based antireflective surfaces in solar cells, light emitting diodes, detection, and imaging are highlighted. The remaining challenges along with future trends in NSA-based antireflective surfaces are also discussed.

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Highly efficient poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/Si hybrid solar cells with imprinted nanopyramid structures

Cited by 33 publications

References 19 publications

Doping‐Free Asymmetrical Silicon Heterocontact Achieved by Integrating Conjugated Molecules for High Efficient Solar Cell

Doping‐Free Asymmetrical Silicon Heterocontact Achieved by Integrating Conjugated Molecules for High Efficient Solar Cell

Silicon-based Organic/inorganic Hybrid Solar Cells

Recent advances in antireflective surfaces based on nanostructure arrays

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