Featured
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Efficient tin-based perovskite solar cells with trans-isomeric fulleropyrrolidine additives
Two precursor additives improve the performance of tin-based perovskite solar cells, delivering a power conversion efficiency of 15.38% and maintaining 93% of the initial efficiency after 500 h of continuous illumination.
- Jingfu Chen
- , Jiefeng Luo
- & Zhanhua Wei
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Article |
Multifunctional entinostat enhances the mechanical robustness and efficiency of flexible perovskite solar cells and minimodules
The organic molecule entinostat improves adhesion between the perovskites and substrates, leading to mechanically robust solar cell minimodules with an area of 9 cm2 and power conversion efficiency of 19%.
- Wenzhan Xu
- , Bo Chen
- & Jinsong Huang
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Article |
Improved fatigue behaviour of perovskite solar cells with an interfacial starch–polyiodide buffer layer
Introduction of a starch-based layer inhibits ion migration and repairs defects generated on light/dark cycles in perovskite solar cells. Cells retain 98.0% of the initial power conversion efficiency after 42 illumination cycles, and achieve a certified power conversion efficiency of 23.9%.
- Yu Zhang
- , Qizhen Song
- & Huanping Zhou
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Perspective |
A dive into underwater solar cells
The authors discuss the opportunities and challenges facing underwater photovoltaics.
- Jason A. Röhr
- , B. Edward Sartor
- & André D. Taylor
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Article |
Engineering the buried interface in perovskite solar cells via lattice-matched electron transport layer
Employing a lattice-matched perovskite oxide as an electron transport layer allows optimizing the buried interface in perovskite solar cells. A maximum power conversion efficiency of 25.17% is achieved. Cells with an initial power conversion efficiency of 24.4% maintain 90% efficiency after operation for 1,000 h.
- Chao Luo
- , Guanhaojie Zheng
- & Qing Zhao
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Article |
Hydrogen-bond-bridged intermediate for perovskite solar cells with enhanced efficiency and stability
A multifunctional additive modulates the kinetics of perovskite film growth, enabling inverted perovskite solar cells with 24.8% power conversion efficiency and enhanced thermal stability.
- Fengzhu Li
- , Xiang Deng
- & Alex K.-Y. Jen
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Article |
Perovskite solar cells based on spiro-OMeTAD stabilized with an alkylthiol additive
The addition of DDT to the spiro-OMeTAD hole transport material enhances the stability of perovskite solar cells to humidity, heat and illumination stress. Fabricated devices exhibit a champion certified power conversion efficiency of 23.1%. Also, the devices could retain 90% of the initial efficiency after 1,000 h of continuous illumination, 97% under moisture stress for 530 h and 91% under 144 h of heat stress.
- Xu Liu
- , Bolin Zheng
- & Martin Green
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Article |
Defect engineering in wide-bandgap perovskites for efficient perovskite–silicon tandem solar cells
Efficient perovskite–silicon tandem solar cells with an efficiency of up to 28.6% are reported by employing tribromide ions to reduce charge recombination.
- Guang Yang
- , Zhenyi Ni
- & Jinsong Huang
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Article |
Cation disorder engineering yields AgBiS2 nanocrystals with enhanced optical absorption for efficient ultrathin solar cells
AgBiS2 nanocrystals with enhanced optical absorption yield efficient ultrathin solar cells.
- Yongjie Wang
- , Seán R. Kavanagh
- & Gerasimos Konstantatos
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Article |
Large-area perovskite solar cells employing spiro-Naph hole transport material
The use of a new hole transport material called spiro-Naph allows the realization of efficient large-area perovskite solar cells.
- Mingyu Jeong
- , In Woo Choi
- & Changduk Yang
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Article |
Stable and low-photovoltage-loss perovskite solar cells by multifunctional passivation
The use of a dimensionally graded 2D perovskite interface and passivation results in perovskite solar cells with very low photovoltage loss.
- Guang Yang
- , Zhiwei Ren
- & Gang Li
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Review Article |
Prospects for metal halide perovskite-based tandem solar cells
A discussion of the evolution, present status and future outlook for tandem solar cells employing perovskite materials.
- Rui Wang
- , Tianyi Huang
- & Yang Yang
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Correspondence |
Reply to ‘Ideal solar cell efficiencies’
- Jean-Francois Guillemoles
- , Thomas Kirchartz
- & Uwe Rau
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Letter |
High-efficiency organic solar cells with low non-radiative recombination loss and low energetic disorder
An organic solar cell designed with minimal energetic disorder exhibits very low energy loss due to non-radiative recombination and highly efficient operation.
- Sha Liu
- , Jun Yuan
- & Yong Cao
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Article |
Efficient and stable Ruddlesden–Popper perovskite solar cell with tailored interlayer molecular interaction
Two-dimensional perovskite solar cells have been engineered to be robust against moisture, high temperatures and light stress.
- Hui Ren
- , Shidong Yu
- & Wei Huang
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Article |
Photodoping through local charge carrier accumulation in alloyed hybrid perovskites for highly efficient luminescence
Localized photodoping in mixed-cation perovskites is shown to modify charge-carrier recombination and thus offer a route for more efficient light emission.
- Sascha Feldmann
- , Stuart Macpherson
- & Felix Deschler
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Comment |
Guide for the perplexed to the Shockley–Queisser model for solar cells
The Shockley–Queisser model is a landmark in photovoltaic device analysis by defining an ideal situation as reference for actual solar cells. However, the model and its implications are easily misunderstood. Thus, we present a guide to help understand and to avoid misinterpreting it.
- Jean-Francois Guillemoles
- , Thomas Kirchartz
- & Uwe Rau
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Article |
Surface passivation of perovskite film for efficient solar cells
Planar perovskite solar cells that have been passivated using the organic halide salt phenethylammonium iodide are shown to have suppressed non-radiative recombination and operate with a certified power conversion efficiency of 23.3%.
- Qi Jiang
- , Yang Zhao
- & Jingbi You
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News & Views |
Quasi-two-dimensional electron–hole droplets
The observation of a room-temperature stable liquid phase of electrons and holes in a quasi-two-dimensional photocell paves the way towards optoelectronic devices that harness collective phenomena.
- Stéphane Berciaud
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Article |
Hybrid perovskite films approaching the radiative limit with over 90% photoluminescence quantum efficiency
Surface treatment is shown to yield passivated perovskite films with very high quasi-Fermi level splitting and internal photoluminescence quantum efficiency, indicating that further improvements in the performance of perovskite optoelectronics should be feasible.
- Ian L. Braly
- , Dane W. deQuilettes
- & Hugh W. Hillhouse
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Article |
Improved photovoltaic performance from inorganic perovskite oxide thin films with mixed crystal phases
The use of mixed crystal phases is shown to enhance the power conversion efficiency of inorganic ferroelectric perovskite solar cells.
- Joyprokash Chakrabartty
- , Catalin Harnagea
- & Riad Nechache
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Review Article |
Next-generation organic photovoltaics based on non-fullerene acceptors
This Review describes how non-fullerene electron acceptor materials are bringing improvements in the power conversion efficiency and stability of organic solar cells.
- Pei Cheng
- , Gang Li
- & Yang Yang
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Dye-sensitized solar cells for efficient power generation under ambient lighting
A dye-sensitized solar cell that has been designed for efficient operation under indoor lighting could offer a convenient means for powering the Internet of Things.
- Marina Freitag
- , Joël Teuscher
- & Anders Hagfeldt
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Letter |
Spatially segregated free-carrier and exciton populations in individual lead halide perovskite grains
A study of single grains of lead halide perovskite reveals the presence of both excitons and free charge carriers.
- S. Nah
- , B. Spokoyny
- & E. Harel
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News & Views |
Semiconductor solution
Reabsorption losses have long been holding back the commercial viability of luminescent solar concentrators. Now, non-toxic silicon-based quantum dots with enhanced Stokes shift may enable the technology to enjoy practical implementation.
- Michael Debije
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Letter |
Solution-processed organic tandem solar cells with power conversion efficiencies >12%
Careful selection of small-molecule materials provides solution-processed tandem organic solar cells with a boost in efficiency.
- Miaomiao Li
- , Ke Gao
- & Yongsheng Chen
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Books & Arts |
New titles at a glance
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Article |
Power conversion efficiency exceeding the Shockley–Queisser limit in a ferroelectric insulator
The Shockley–Queisser limit for solar cells is overcome in the ferroelectric insulator BaTiO3.
- Jonathan E. Spanier
- , Vladimir M. Fridkin
- & Craig L. Johnson
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Books & Arts |
New titles at a glance
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Letter |
Solution-processed solar cells based on environmentally friendly AgBiS2 nanocrystals
AgBiS2 nanocrystals offer a route to solution-processed environmentally friendly solar cells.
- María Bernechea
- , Nichole Cates
- & Gerasimos Konstantatos
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Correspondence |
Photocarrier lifetime and recombination losses in photovoltaic systems
- Almantas Pivrikas
- , Bronson Philippa
- & Gytis Juska
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Article |
Bulk heterojunction perovskite–PCBM solar cells with high fill factor
Bulk heterojunction perovskite solar cells with a high fill factor are reported.
- Chien-Hung Chiang
- & Chun-Guey Wu
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Letter |
Solid-state infrared-to-visible upconversion sensitized by colloidal nanocrystals
Lead sulphide colloidal nanocrystals offer a solid-state answer for infrared-to-visible upconversion.
- Mengfei Wu
- , Daniel N. Congreve
- & Marc A. Baldo
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Article |
Role of microstructure in the electron–hole interaction of hybrid lead halide perovskites
The morphology of perovskites, a materials system of great interest for use in solar cells and other optoelectronic devices, is found to strongly modify their charge generation and transport properties.
- Giulia Grancini
- , Ajay Ram Srimath Kandada
- & Annamaria Petrozza
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Review Article |
Status and prospects for ternary organic photovoltaics
The benefits of designing and constructing organic solar cells featuring more than a single donor and single acceptor material are discussed.
- Luyao Lu
- , Mary Allison Kelly
- & Luping Yu
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Letter |
Efficient polymer solar cells employing a non-conjugated small-molecule electrolyte
Small molecules improve the characteristics of polymer solar cells.
- Xinhua Ouyang
- , Ruixiang Peng
- & Ziyi Ge
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News & Views |
Non-cubic solar cell materials
Controlled growth of non-cubic, anisotropic solar cell materials, such as antimony selenide, is bringing new opportunities for efficient thin-film photovoltaics.
- Vera Steinmann
- , Riley E. Brandt
- & Tonio Buonassisi
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Article |
Efficient inverted polymer solar cells employing favourable molecular orientation
Molecular orientation in polymer solar cells is shown to play an important role in device performance.
- Varun Vohra
- , Kazuaki Kawashima
- & Hideyuki Murata
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Article |
Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries
Materials with a one-dimensional crystal structure, such as antimony selenide, show considerable potential for making efficient thin-film solar cells.
- Ying Zhou
- , Liang Wang
- & Jiang Tang
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Correspondence |
The true status of solar cell technology
- K. D. G. Imalka Jayawardena
- , Lynn J. Rozanski
- & S. Ravi P. Silva
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Letter |
Single-junction polymer solar cells with high efficiency and photovoltage
Organic solar cells with efficiency greater than 10% are fabricated by incorporating a semiconductor polymer with a deepened valence energy level.
- Zhicai He
- , Biao Xiao
- & Yong Cao
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Article |
High-performance multiple-donor bulk heterojunction solar cells
The use of carefully selected multiple donor polymers is shown to improve the performance of polymer solar cells.
- Yang (Michael) Yang
- , Wei Chen
- & Yang Yang
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Article |
Small-molecule solar cells with efficiency over 9%
Solution-processed small-molecule solar cells with almost 100% internal quantum efficiency and a power conversion efficiency of 9% are reported. The cells make use of a donor molecule called DRCN7T and use PC71BM as an acceptor.
- Qian Zhang
- , Bin Kan
- & Yongsheng Chen
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Article |
Bandgap tuning of multiferroic oxide solar cells
Tuning the bandgap of multiferroic solar cells made from Bi2FeCrO6 is achieved by cationic ordering and is shown to dramatically improve their performance.
- R. Nechache
- , C. Harnagea
- & F. Rosei
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Article |
Ternary blend polymer solar cells with enhanced power conversion efficiency
The use of two, rather than one, donor polymers in an organic solar cell is shown to enhance charge separation, transport and recombination.
- Luyao Lu
- , Tao Xu
- & Luping Yu
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Article |
Band filling with free charge carriers in organometal halide perovskites
Femtosecond transient absorption spectroscopy measurements indicate that the dominant relaxation pathway for excited states in perovskite materials is by recombination of free electrons and holes.
- Joseph S. Manser
- & Prashant V. Kamat
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Efficient and stable perovskite solar cells with regulated depletion region