e-journal

Toward High-Effi ciency Solution-Processed Planar Heterojunction Sb 2 S 3 Solar Cells

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Low-cost hybrid solar cells have made tremendous steps forward during the past decade owing to the implementation of extremely thin inorganic coatings as absorber layers, typically in combination with organic hole transporters. Using only extremely thin fi lms of these absorbers reduces the requirement of single crystalline high-quality materials and paves the way for low-cost solution processing compatible with roll-to-roll fabrication processes. To date, the most effi cient absorber material, except for the recently introduced organic–inorganic lead halide perovskites, has been Sb 2 S 3 , which can be implemented in hybrid photovoltaics using a simple chemical bath deposition. Current high-effi ciency Sb 2 S 3 devices utilize absorber coatings on nanostructured TiO 2 electrodes in combination with polymeric hole transporters. This geometry has so far been the state of the art, even though fl at
junction devices would be conceptually simpler with the additional potential of higher open circuit voltages due to reduced charge carrier recombination. Besides, the role of the hole transporter is not completely clarifi ed yet. In particular,additional photocurrent contribution from the polymers has not been directly shown, which points toward detrimental parasitic light absorption in the polymers. This study presents a fi ne-tuned chemical bath deposition
method that allows fabricating solution-processed low-cost fl at junction Sb 2 S 3 solar cells with the highest open circuit voltage reported so far for chemical bath devices and effi ciencies exceeding 4%. Characterization of back-illuminated solar cells in combination with transfer matrix-based simulations further allows to address the issue of absorption losses in the hole transport material and outline a pathway toward more effi cient future devices.

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Informasi Detail

Judul Seri

Adv. Sci.

No. Panggil

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Penerbit

: The Authors., 2015

Deskripsi Fisik

Adv. Sci. 2015, 2, 1500059

Bahasa

English

ISBN/ISSN

DOI: 10.1002/advs.20

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

-

Subjek

KESEHATAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

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